31631314012 has 6 divisors (see below), whose sum is σ = 55354799528. Its totient is φ = 15815657004.

The previous prime is 31631314009. The next prime is 31631314049. The reversal of 31631314012 is 21041313613.

It is a super-2 number, since 2×31631314012² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3953914248 + ... + 3953914255.

Almost surely, 2^31631314012 is an apocalyptic number.

It is an amenable number.

31631314012 is a deficient number, since it is larger than the sum of its proper divisors (23723485516).

31631314012 is a wasteful number, since it uses less digits than its factorization.

31631314012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7907828507 (or 7907828505 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31631314012 its reverse (21041313613), we get a palindrome (52672627625).

The spelling of 31631314012 in words is "thirty-one billion, six hundred thirty-one million, three hundred fourteen thousand, twelve".