231313313122 has 4 divisors (see below), whose sum is σ = 346969969686. Its totient is φ = 115656656560.

The previous prime is 231313313057. The next prime is 231313313137. The reversal of 231313313122 is 221313313132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 199486396321 + 31826916801 = 446639^2 + 178401^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57828328279 + ... + 57828328282.

Almost surely, 2^231313313122 is an apocalyptic number.

231313313122 is a deficient number, since it is larger than the sum of its proper divisors (115656656564).

231313313122 is a wasteful number, since it uses less digits than its factorization.

231313313122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115656656563.

The product of its digits is 1944, while the sum is 25.

Adding to 231313313122 its reverse (221313313132), we get a palindrome (452626626254).

The spelling of 231313313122 in words is "two hundred thirty-one billion, three hundred thirteen million, three hundred thirteen thousand, one hundred twenty-two".