31000123010212 has 12 divisors (see below), whose sum is σ = 54265407176176. Its totient is φ = 15495720959880.

The previous prime is 31000123010167. The next prime is 31000123010323. The reversal of 31000123010212 is 21201032100013.

It is a super-2 number, since 2×31000123010212² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085120238 + ... + 1085148805.

Almost surely, 2^{31000123010212} is an apocalyptic number.

It is an amenable number.

31000123010212 is a deficient number, since it is larger than the sum of its proper divisors (23265284165964).

31000123010212 is a wasteful number, since it uses less digits than its factorization.

31000123010212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170272618 (or 2170272616 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31000123010212 its reverse (21201032100013), we get a palindrome (52201155110225).

The spelling of 31000123010212 in words is "thirty-one trillion, one hundred twenty-three million, ten thousand, two hundred twelve".