31672988 has 12 divisors (see below), whose sum is σ = 57339240. Its totient is φ = 15290352.

The previous prime is 31672987. The next prime is 31673003. The reversal of 31672988 is 88927613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31672987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136406 + ... + 136637.

It is an arithmetic number, because the mean of its divisors is an integer number (4778270).

Almost surely, 2^31672988 is an apocalyptic number.

It is an amenable number.

31672988 is a deficient number, since it is larger than the sum of its proper divisors (25666252).

31672988 is a wasteful number, since it uses less digits than its factorization.

31672988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273076 (or 273074 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 31672988 is about 5627.8759758900. The cubic root of 31672988 is about 316.3950488372.

The spelling of 31672988 in words is "thirty-one million, six hundred seventy-two thousand, nine hundred eighty-eight".