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2831304100 = 22521723132
BaseRepresentation
bin1010100011000010…
…0100010110100100
321022022121011001211
42220300210112210
521244303212400
61144540401204
7130106454622
oct25060442644
97268534054
102831304100
111223219749
12670246204
1336176a991
141cc052512
1511886edba
hexa8c245a4

2831304100 has 81 divisors (see below), whose sum is σ = 6547515177. Its totient is φ = 1062497280.

The previous prime is 2831304089. The next prime is 2831304101. The reversal of 2831304100 is 14031382.

The square root of 2831304100 is 53210.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 2679718756 + 151585344 = 51766^2 + 12312^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2831304101) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9045544 + ... + 9045856.

Almost surely, 22831304100 is an apocalyptic number.

2831304100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

2831304100 is the 53210-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2831304100

2831304100 is an abundant number, since it is smaller than the sum of its proper divisors (3716211077).

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

2831304100 is a wasteful number, since it uses less digits than its factorization.

2831304100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The cubic root of 2831304100 is about 1414.6928957652.

Multiplying 2831304100 by its product of nonzero digits (576), we get a square (1630831161600 = 12770402).

Adding to 2831304100 its reverse (14031382), we get a palindrome (2845335482).

The spelling of 2831304100 in words is "two billion, eight hundred thirty-one million, three hundred four thousand, one hundred".

Divisors: 1 2 4 5 10 17 20 25 34 50 68 85 100 170 289 313 340 425 578 626 850 1156 1252 1445 1565 1700 2890 3130 5321 5780 6260 7225 7825 10642 14450 15650 21284 26605 28900 31300 53210 90457 97969 106420 133025 180914 195938 266050 361828 391876 452285 489845 532100 904570 979690 1665473 1809140 1959380 2261425 2449225 3330946 4522850 4898450 6661892 8327365 9045700 9796900 16654730 28313041 33309460 41636825 56626082 83273650 113252164 141565205 166547300 283130410 566260820 707826025 1415652050 2831304100