231313111100 has 72 divisors (see below), whose sum is σ = 503828252928. Its totient is φ = 92179609600.

The previous prime is 231313111093. The next prime is 231313111103. The reversal of 231313111100 is 1111313132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30891557 + ... + 30899043.

It is an arithmetic number, because the mean of its divisors is an integer number (6997614624).

Almost surely, 2^231313111100 is an apocalyptic number.

231313111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231313111100 is an abundant number, since it is smaller than the sum of its proper divisors (272515141828).

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

231313111100 is a wasteful number, since it uses less digits than its factorization.

231313111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8615 (or 8608 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 231313111100 its reverse (1111313132), we get a palindrome (232424424232).

The spelling of 231313111100 in words is "two hundred thirty-one billion, three hundred thirteen million, one hundred eleven thousand, one hundred".