31130213122012 has 48 divisors (see below), whose sum is σ = 57629853046080. Its totient is φ = 14683225632768.

The previous prime is 31130213121977. The next prime is 31130213122033. The reversal of 31130213122012 is 21022131203113.

It is a super-2 number, since 2×31130213122012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 85844308 + ... + 86206180.

It is an arithmetic number, because the mean of its divisors is an integer number (1200621938460).

Almost surely, 2^{31130213122012} is an apocalyptic number.

It is an amenable number.

31130213122012 is a deficient number, since it is larger than the sum of its proper divisors (26499639924068).

31130213122012 is a wasteful number, since it uses less digits than its factorization.

31130213122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374782 (or 374780 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31130213122012 its reverse (21022131203113), we get a palindrome (52152344325125).

The spelling of 31130213122012 in words is "thirty-one trillion, one hundred thirty billion, two hundred thirteen million, one hundred twenty-two thousand, twelve".