31300012000 has 48 divisors (see below), whose sum is σ = 76904139312. Its totient is φ = 12520003200.

The previous prime is 31300011991. The next prime is 31300012033. The reversal of 31300012000 is 21000313.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3908502 + ... + 3916501.

It is an arithmetic number, because the mean of its divisors is an integer number (1602169569).

Almost surely, 2^31300012000 is an apocalyptic number.

It is an amenable number.

31300012000 is an abundant number, since it is smaller than the sum of its proper divisors (45604127312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31300012000 is an equidigital number, since it uses as much as digits as its factorization.

31300012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7825028 (or 7825010 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 31300012000 its reverse (21000313), we get a palindrome (31321012313).

The spelling of 31300012000 in words is "thirty-one billion, three hundred million, twelve thousand".