31314431212 has 12 divisors (see below), whose sum is σ = 55332296656. Its totient is φ = 15505203600.

The previous prime is 31314431117. The next prime is 31314431219. The reversal of 31314431212 is 21213441313.

It is not an unprimeable number, because it can be changed into a prime (31314431219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38002539 + ... + 38003362.

Almost surely, 2^31314431212 is an apocalyptic number.

It is an amenable number.

31314431212 is a deficient number, since it is larger than the sum of its proper divisors (24017865444).

31314431212 is a wasteful number, since it uses less digits than its factorization.

31314431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76006008 (or 76006006 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 31314431212 its reverse (21213441313), we get a palindrome (52527872525).

The spelling of 31314431212 in words is "thirty-one billion, three hundred fourteen million, four hundred thirty-one thousand, two hundred twelve".