31307068 has 24 divisors (see below), whose sum is σ = 59756480. Its totient is φ = 14264640.

The previous prime is 31307057. The next prime is 31307077. The reversal of 31307068 is 86070313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298 + ... + 7918.

Almost surely, 2^31307068 is an apocalyptic number.

It is an amenable number.

31307068 is a deficient number, since it is larger than the sum of its proper divisors (28449412).

31307068 is a wasteful number, since it uses less digits than its factorization.

31307068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7717 (or 7715 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 31307068 is about 5595.2719326231. The cubic root of 31307068 is about 315.1718823424.

The spelling of 31307068 in words is "thirty-one million, three hundred seven thousand, sixty-eight".