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202331303120 = 24517194976333
BaseRepresentation
bin1011110001101111100…
…0101010110011010000
3201100020211001011011102
42330123320222303100
511303333303144440
6232541050003532
720421646462052
oct2743370526320
9640224034142
10202331303120
11788988227a1
12332684165a8
131610630448b
149b1597b8d2
1553e2e7ab15
hex2f1be2acd0

202331303120 has 80 divisors (see below), whose sum is σ = 498354152400. Its totient is φ = 76131704832.

The previous prime is 202331303113. The next prime is 202331303147. The reversal of 202331303120 is 21303133202.

It can be written as a sum of positive squares in 8 ways, for example, as 1777802896 + 200553500224 = 42164^2 + 447832^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 202331303092 and 202331303101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2612474 + ... + 2688806.

It is an arithmetic number, because the mean of its divisors is an integer number (6229426905).

Almost surely, 2202331303120 is an apocalyptic number.

202331303120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202331303120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249177076200).

202331303120 is an abundant number, since it is smaller than the sum of its proper divisors (296022849280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202331303120 is a wasteful number, since it uses less digits than its factorization.

202331303120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78312 (or 78306 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 202331303120 its reverse (21303133202), we get a palindrome (223634436322).

The spelling of 202331303120 in words is "two hundred two billion, three hundred thirty-one million, three hundred three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 680 1360 1949 3898 7796 9745 15592 19490 31184 33133 38980 66266 76333 77960 132532 152666 155920 165665 265064 305332 331330 381665 530128 610664 662660 763330 1221328 1297661 1325320 1526660 2595322 2650640 3053320 5190644 6106640 6488305 10381288 12976610 20762576 25953220 51906440 103812880 148773017 297546034 595092068 743865085 1190184136 1487730170 2380368272 2529141289 2975460340 5058282578 5950920680 10116565156 11901841360 12645706445 20233130312 25291412890 40466260624 50582825780 101165651560 202331303120