31672990 has 16 divisors (see below), whose sum is σ = 57264480. Its totient is φ = 12612960.

The previous prime is 31672987. The next prime is 31673003. The reversal of 31672990 is 9927613.

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, 4626 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (3579030).

Almost surely, 2^31672990 is an apocalyptic number.

31672990 is a deficient number, since it is larger than the sum of its proper divisors (25591490).

31672990 is a wasteful number, since it uses less digits than its factorization.

31672990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14067.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 31672990 is about 5627.8761535769. The cubic root of 31672990 is about 316.3950554968.

The spelling of 31672990 in words is "thirty-one million, six hundred seventy-two thousand, nine hundred ninety".