231312321110 has 64 divisors (see below), whose sum is σ = 472149216000. Its totient is φ = 80885112192.

The previous prime is 231312321103. The next prime is 231312321179. The reversal of 231312321110 is 11123213132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8134337 + ... + 8162723.

It is an arithmetic number, because the mean of its divisors is an integer number (7377331500).

Almost surely, 2^231312321110 is an apocalyptic number.

231312321110 is an abundant number, since it is smaller than the sum of its proper divisors (240836894890).

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

231312321110 is a wasteful number, since it uses less digits than its factorization.

231312321110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31725.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231312321110 its reverse (11123213132), we get a palindrome (242435534242).

The spelling of 231312321110 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred twenty-one thousand, one hundred ten".