231321310222 has 16 divisors (see below), whose sum is σ = 355074572160. Its totient is φ = 112963471992.

The previous prime is 231321310193. The next prime is 231321310261. The reversal of 231321310222 is 222013123132.

It is a junction number, because it is equal to n+sod(n) for n = 231321310193 and 231321310202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372279 + ... + 1531597.

It is an arithmetic number, because the mean of its divisors is an integer number (22192160760).

Almost surely, 2^231321310222 is an apocalyptic number.

231321310222 is a deficient number, since it is larger than the sum of its proper divisors (123753261938).

231321310222 is a wasteful number, since it uses less digits than its factorization.

231321310222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176247.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231321310222 its reverse (222013123132), we get a palindrome (453334433354).

The spelling of 231321310222 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred ten thousand, two hundred twenty-two".