231313120100 has 18 divisors (see below), whose sum is σ = 501949470834. Its totient is φ = 92525248000.

The previous prime is 231313120043. The next prime is 231313120139. The reversal of 231313120100 is 1021313132.

It can be written as a sum of positive squares in 3 ways, for example, as 52157284 + 231260962816 = 7222^2 + 480896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156565501 + ... + 1156565700.

It is an arithmetic number, because the mean of its divisors is an integer number (27886081713).

Almost surely, 2^231313120100 is an apocalyptic number.

231313120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313120100 is an abundant number, since it is smaller than the sum of its proper divisors (270636350734).

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

231313120100 is a wasteful number, since it uses less digits than its factorization.

231313120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313131215 (or 2313131208 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 231313120100 its reverse (1021313132), we get a palindrome (232334433232).

The spelling of 231313120100 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred twenty thousand, one hundred".