212310031131 has 12 divisors (see below), whose sum is σ = 334549140120. Its totient is φ = 128672746080.

The previous prime is 212310031121. The next prime is 212310031139. The reversal of 212310031131 is 131130013212.

212310031131 is a `hidden beast` number, since 2 + 12 + 310 + 0 + 311 + 31 = 666.

It is not a de Polignac number, because 212310031131 - 2⁵ = 212310031099 is a prime.

It is a super-2 number, since 2×212310031131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212310031139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1072272786 + ... + 1072272983.

It is an arithmetic number, because the mean of its divisors is an integer number (27879095010).

Almost surely, 2^212310031131 is an apocalyptic number.

212310031131 is a deficient number, since it is larger than the sum of its proper divisors (122239108989).

212310031131 is a wasteful number, since it uses less digits than its factorization.

212310031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144545786 (or 2144545783 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 212310031131 its reverse (131130013212), we get a palindrome (343440044343).

The spelling of 212310031131 in words is "two hundred twelve billion, three hundred ten million, thirty-one thousand, one hundred thirty-one".