31873012 has 12 divisors (see below), whose sum is σ = 55818756. Its totient is φ = 15924800.

The previous prime is 31873007. The next prime is 31873033. The reversal of 31873012 is 21037813.

It can be written as a sum of positive squares in 2 ways, for example, as 6832996 + 25040016 = 2614^2 + 5004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6762 + ... + 10462.

It is an arithmetic number, because the mean of its divisors is an integer number (4651563).

Almost surely, 2^31873012 is an apocalyptic number.

It is an amenable number.

31873012 is a deficient number, since it is larger than the sum of its proper divisors (23945744).

31873012 is a wasteful number, since it uses less digits than its factorization.

31873012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858 (or 5856 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 31873012 is about 5645.6188323336. The cubic root of 31873012 is about 317.0596934692.

The spelling of 31873012 in words is "thirty-one million, eight hundred seventy-three thousand, twelve".