202131230323122 has 24 divisors (see below), whose sum is σ = 437958192604140. Its totient is φ = 67375970071200.

The previous prime is 202131230323021. The next prime is 202131230323123. The reversal of 202131230323122 is 221323032131202.

202131230323122 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 312 + 3 + 0 + 32 + 312 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 190981648191321 + 11149582131801 = 13819611^2 + 3339099^2 .

It is not an unprimeable number, because it can be changed into a prime (202131230323123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91098597 + ... + 93291032.

Almost surely, 2^{202131230323122} is an apocalyptic number.

202131230323122 is an abundant number, since it is smaller than the sum of its proper divisors (235826962281018).

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

202131230323122 is a wasteful number, since it uses less digits than its factorization.

202131230323122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184450538 (or 184450535 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 202131230323122 its reverse (221323032131202), we get a palindrome (423454262454324).

The spelling of 202131230323122 in words is "two hundred two trillion, one hundred thirty-one billion, two hundred thirty million, three hundred twenty-three thousand, one hundred twenty-two".