31663068 has 12 divisors (see below), whose sum is σ = 73880520. Its totient is φ = 10554352.

The previous prime is 31663057. The next prime is 31663081. The reversal of 31663068 is 86036613.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319283 + ... + 1319306.

It is an arithmetic number, because the mean of its divisors is an integer number (6156710).

Almost surely, 2^31663068 is an apocalyptic number.

It is an amenable number.

31663068 is an abundant number, since it is smaller than the sum of its proper divisors (42217452).

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

31663068 is a wasteful number, since it uses less digits than its factorization.

31663068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638596 (or 2638594 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 31663068 is about 5626.9945797024. The cubic root of 31663068 is about 316.3620136779.

The spelling of 31663068 in words is "thirty-one million, six hundred sixty-three thousand, sixty-eight".