31974663 has 32 divisors (see below), whose sum is σ = 51773440. Its totient is φ = 17146080.

The previous prime is 31974661. The next prime is 31974667. The reversal of 31974663 is 36647913.

It is not a de Polignac number, because 31974663 - 2¹ = 31974661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31974661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50358 + ... + 50988.

It is an arithmetic number, because the mean of its divisors is an integer number (1617920).

Almost surely, 2^31974663 is an apocalyptic number.

31974663 is a deficient number, since it is larger than the sum of its proper divisors (19798777).

31974663 is a wasteful number, since it uses less digits than its factorization.

31974663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787.

The product of its digits is 81648, while the sum is 39.

The square root of 31974663 is about 5654.6143104548. The cubic root of 31974663 is about 317.3963966431.

The spelling of 31974663 in words is "thirty-one million, nine hundred seventy-four thousand, six hundred sixty-three".