31672887 has 16 divisors (see below), whose sum is σ = 45349632. Its totient is φ = 19591040.

The previous prime is 31672871. The next prime is 31672889. The reversal of 31672887 is 78827613.

It is a cyclic number.

It is not a de Polignac number, because 31672887 - 2⁴ = 31672871 is a prime.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753 + ... + 7994.

It is an arithmetic number, because the mean of its divisors is an integer number (2834352).

Almost surely, 2^31672887 is an apocalyptic number.

31672887 is a deficient number, since it is larger than the sum of its proper divisors (13676745).

31672887 is a wasteful number, since it uses less digits than its factorization.

31672887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838.

The product of its digits is 112896, while the sum is 42.

The square root of 31672887 is about 5627.8670026929. The cubic root of 31672887 is about 316.3947125261.

The spelling of 31672887 in words is "thirty-one million, six hundred seventy-two thousand, eight hundred eighty-seven".