31402672 has 40 divisors (see below), whose sum is σ = 73629216. Its totient is φ = 12665856.

The previous prime is 31402663. The next prime is 31402703. The reversal of 31402672 is 27620413.

It is a super-2 number, since 2×31402672² = 1972255617479168, which contains 22 as substring.

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, 6343 + ... + 10150.

Almost surely, 2^31402672 is an apocalyptic number.

It is an amenable number.

31402672 is an abundant number, since it is smaller than the sum of its proper divisors (42226544).

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

31402672 is a wasteful number, since it uses less digits than its factorization.

31402672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16525 (or 16519 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 31402672 is about 5603.8087048007. The cubic root of 31402672 is about 315.4923751781.

The spelling of 31402672 in words is "thirty-one million, four hundred two thousand, six hundred seventy-two".