31672886 has 64 divisors (see below), whose sum is σ = 61931520. Its totient is φ = 11832480.

The previous prime is 31672871. The next prime is 31672889. The reversal of 31672886 is 68827613.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31672889) 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 31 ways as a sum of consecutive naturals, for example, 189575 + ... + 189741.

It is an arithmetic number, because the mean of its divisors is an integer number (967680).

Almost surely, 2^31672886 is an apocalyptic number.

31672886 is a deficient number, since it is larger than the sum of its proper divisors (30258634).

31672886 is a wasteful number, since it uses less digits than its factorization.

31672886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its digits is 96768, while the sum is 41.

The square root of 31672886 is about 5627.8669138493. The cubic root of 31672886 is about 316.3947091963.

The spelling of 31672886 in words is "thirty-one million, six hundred seventy-two thousand, eight hundred eighty-six".