231222310222131 has 48 divisors (see below), whose sum is σ = 352593716020000. Its totient is φ = 145608329687040.

The previous prime is 231222310222121. The next prime is 231222310222151. The reversal of 231222310222131 is 131222013222132.

231222310222131 is a `hidden beast` number, since 2 + 3 + 122 + 2 + 310 + 2 + 221 + 3 + 1 = 666.

231222310222131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-231222310222131 is a prime.

It is a super-2 number, since 2×231222310222131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231222310222095 and 231222310222104.

It is not an unprimeable number, because it can be changed into a prime (231222310222121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1134336201 + ... + 1134540021.

Almost surely, 2^{231222310222131} is an apocalyptic number.

231222310222131 is a deficient number, since it is larger than the sum of its proper divisors (121371405797869).

231222310222131 is a wasteful number, since it uses less digits than its factorization.

231222310222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223204 (or 223201 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 231222310222131 its reverse (131222013222132), we get a palindrome (362444323444263).

The spelling of 231222310222131 in words is "two hundred thirty-one trillion, two hundred twenty-two billion, three hundred ten million, two hundred twenty-two thousand, one hundred thirty-one".