31372716 has 12 divisors (see below), whose sum is σ = 73203032. Its totient is φ = 10457568.

The previous prime is 31372711. The next prime is 31372723. The reversal of 31372716 is 61727313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31372711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1307185 + ... + 1307208.

Almost surely, 2^31372716 is an apocalyptic number.

It is an amenable number.

31372716 is an abundant number, since it is smaller than the sum of its proper divisors (41830316).

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

31372716 is a wasteful number, since it uses less digits than its factorization.

31372716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614400 (or 2614398 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 31372716 is about 5601.1352420737. The cubic root of 31372716 is about 315.3920238837.

The spelling of 31372716 in words is "thirty-one million, three hundred seventy-two thousand, seven hundred sixteen".