31250000007 has 6 divisors (see below), whose sum is σ = 45138888912. Its totient is φ = 20833333332.

The previous prime is 31249999987. The next prime is 31250000009. The reversal of 31250000007 is 70000005213.

It is not a de Polignac number, because 31250000007 - 2¹² = 31249995911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31250000009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1736111103 + ... + 1736111120.

It is an arithmetic number, because the mean of its divisors is an integer number (7523148152).

Almost surely, 2^31250000007 is an apocalyptic number.

31250000007 is a deficient number, since it is larger than the sum of its proper divisors (13888888905).

31250000007 is a wasteful number, since it uses less digits than its factorization.

31250000007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472222229 (or 3472222226 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The spelling of 31250000007 in words is "thirty-one billion, two hundred fifty million, seven", and thus it is an aban number.