231231210100 has 72 divisors (see below), whose sum is σ = 547490958336. Its totient is φ = 84068160000.

The previous prime is 231231210059. The next prime is 231231210109. The reversal of 231231210100 is 1012132132.

231231210100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231231210109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6881340 + ... + 6914860.

It is an arithmetic number, because the mean of its divisors is an integer number (7604041088).

Almost surely, 2^231231210100 is an apocalyptic number.

231231210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231231210100 is an abundant number, since it is smaller than the sum of its proper divisors (316259748236).

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

231231210100 is a wasteful number, since it uses less digits than its factorization.

231231210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39817 (or 39810 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231231210100 its reverse (1012132132), we get a palindrome (232243342232).

The spelling of 231231210100 in words is "two hundred thirty-one billion, two hundred thirty-one million, two hundred ten thousand, one hundred".