31013005012 has 24 divisors (see below), whose sum is σ = 59228713152. Its totient is φ = 14091566400.

The previous prime is 31013005003. The next prime is 31013005019. The reversal of 31013005012 is 21050031013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31013005019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10713 + ... + 249280.

It is an arithmetic number, because the mean of its divisors is an integer number (2467863048).

Almost surely, 2^31013005012 is an apocalyptic number.

It is an amenable number.

31013005012 is a deficient number, since it is larger than the sum of its proper divisors (28215708140).

31013005012 is a wasteful number, since it uses less digits than its factorization.

31013005012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262719 (or 262717 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

Adding to 31013005012 its reverse (21050031013), we get a palindrome (52063036025).

The spelling of 31013005012 in words is "thirty-one billion, thirteen million, five thousand, twelve".