31086968 has 32 divisors (see below), whose sum is σ = 63808560. Its totient is φ = 14081280.

The previous prime is 31086967. The next prime is 31086971. The reversal of 31086968 is 86968013.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31086967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39830 + ... + 40602.

Almost surely, 2^31086968 is an apocalyptic number.

It is an amenable number.

31086968 is an abundant number, since it is smaller than the sum of its proper divisors (32721592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31086968 is a wasteful number, since it uses less digits than its factorization.

31086968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 31086968 is about 5575.5688499022. The cubic root of 31086968 is about 314.4315539598.

It can be divided in two parts, 310 and 86968, that added together give a palindrome (87278).

The spelling of 31086968 in words is "thirty-one million, eighty-six thousand, nine hundred sixty-eight".