231312313122 has 32 divisors (see below), whose sum is σ = 509678270784. Its totient is φ = 69400632000.

The previous prime is 231312313087. The next prime is 231312313129. The reversal of 231312313122 is 221313213132.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 231312313092 and 231312313101.

It is not an unprimeable number, because it can be changed into a prime (231312313129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17343493 + ... + 17356824.

It is an arithmetic number, because the mean of its divisors is an integer number (15927445962).

Almost surely, 2^231312313122 is an apocalyptic number.

231312313122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231312313122 is an abundant number, since it is smaller than the sum of its proper divisors (278365957662).

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

231312313122 is a wasteful number, since it uses less digits than its factorization.

231312313122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34700434.

The product of its digits is 1296, while the sum is 24.

Adding to 231312313122 its reverse (221313213132), we get a palindrome (452625526254).

The spelling of 231312313122 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred thirteen thousand, one hundred twenty-two".