231312102 has 32 divisors (see below), whose sum is σ = 531105792. Its totient is φ = 65790144.

The previous prime is 231312083. The next prime is 231312113. The reversal of 231312102 is 201213132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2983 + ... + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (16597056).

Almost surely, 2^231312102 is an apocalyptic number.

231312102 is an abundant number, since it is smaller than the sum of its proper divisors (299793690).

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

231312102 is a wasteful number, since it uses less digits than its factorization.

231312102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24932.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231312102 is about 15208.9480898582. The cubic root of 231312102 is about 613.8554533883.

Adding to 231312102 its reverse (201213132), we get a palindrome (432525234).

The spelling of 231312102 in words is "two hundred thirty-one million, three hundred twelve thousand, one hundred two".