231332121100 has 18 divisors (see below), whose sum is σ = 501990703004. Its totient is φ = 92532848400.

The previous prime is 231332121091. The next prime is 231332121109. The reversal of 231332121100 is 1121233132.

It is an interprime number because it is at equal distance from previous prime (231332121091) and next prime (231332121109).

It is not an unprimeable number, because it can be changed into a prime (231332121109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1156660506 + ... + 1156660705.

Almost surely, 2^231332121100 is an apocalyptic number.

231332121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231332121100 is an abundant number, since it is smaller than the sum of its proper divisors (270658581904).

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

231332121100 is a wasteful number, since it uses less digits than its factorization.

231332121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313321225 (or 2313321218 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 231332121100 its reverse (1121233132), we get a palindrome (232453354232).

The spelling of 231332121100 in words is "two hundred thirty-one billion, three hundred thirty-two million, one hundred twenty-one thousand, one hundred".