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231231201300 = 2232521129805403
BaseRepresentation
bin1101011101011001110…
…1000010000000010100
3211002211220022002112200
43113112131002000110
512242030141420200
6254120503044500
722464060532011
oct3272635020024
9732756262480
10231231201300
118a078a91a70
1238992a40730
1318a607b1448
14b297c5c708
1560351ed800
hex35d6742014

231231201300 has 216 divisors, whose sum is σ = 817936086240. Its totient is φ = 54123014400.

The previous prime is 231231201283. The next prime is 231231201323. The reversal of 231231201300 is 3102132132.

231231201300 is a `hidden beast` number, since 2 + 312 + 31 + 20 + 1 + 300 = 666.

It is a super-2 number, since 2×2312312013002 (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 115602 + ... + 689801.

It is an arithmetic number, because the mean of its divisors is an integer number (3786741140).

Almost surely, 2231231201300 is an apocalyptic number.

231231201300 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 231231201300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408968043120).

231231201300 is an abundant number, since it is smaller than the sum of its proper divisors (586704884940).

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

231231201300 is a wasteful number, since it uses less digits than its factorization.

231231201300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805463 (or 805453 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231231201300 its reverse (3102132132), we get a palindrome (234333333432).

The spelling of 231231201300 in words is "two hundred thirty-one billion, two hundred thirty-one million, two hundred one thousand, three hundred".