31268986 has 8 divisors (see below), whose sum is σ = 53604000. Its totient is φ = 13400988.

The previous prime is 31268981. The next prime is 31269031. The reversal of 31268986 is 68986213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31268981) 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, 1116736 + ... + 1116763.

It is an arithmetic number, because the mean of its divisors is an integer number (6700500).

Almost surely, 2^31268986 is an apocalyptic number.

31268986 is a deficient number, since it is larger than the sum of its proper divisors (22335014).

31268986 is a wasteful number, since it uses less digits than its factorization.

31268986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233508.

The product of its digits is 124416, while the sum is 43.

The square root of 31268986 is about 5591.8678453626. The cubic root of 31268986 is about 315.0440385225.

The spelling of 31268986 in words is "thirty-one million, two hundred sixty-eight thousand, nine hundred eighty-six".