31297948 has 12 divisors (see below), whose sum is σ = 59750712. Its totient is φ = 14226320.

The previous prime is 31297913. The next prime is 31297951. The reversal of 31297948 is 84979213.

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, 355615 + ... + 355702.

It is an arithmetic number, because the mean of its divisors is an integer number (4979226).

Almost surely, 2^31297948 is an apocalyptic number.

It is an amenable number.

31297948 is a deficient number, since it is larger than the sum of its proper divisors (28452764).

31297948 is a wasteful number, since it uses less digits than its factorization.

31297948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711332 (or 711330 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 31297948 is about 5594.4568994675. The cubic root of 31297948 is about 315.1412753378.

The spelling of 31297948 in words is "thirty-one million, two hundred ninety-seven thousand, nine hundred forty-eight".