31960797 has 16 divisors (see below), whose sum is σ = 46944768. Its totient is φ = 19180080.

The previous prime is 31960769. The next prime is 31960837. The reversal of 31960797 is 79706913.

It is not a de Polignac number, because 31960797 - 2¹⁰ = 31959773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31960757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1303 + ... + 8100.

It is an arithmetic number, because the mean of its divisors is an integer number (2934048).

Almost surely, 2^31960797 is an apocalyptic number.

It is an amenable number.

31960797 is a deficient number, since it is larger than the sum of its proper divisors (14983971).

31960797 is a wasteful number, since it uses less digits than its factorization.

31960797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 31960797 is about 5653.3880991844. The cubic root of 31960797 is about 317.3505097402.

It can be divided in two parts, 319 and 60797, that added together give a palindrome (61116).

The spelling of 31960797 in words is "thirty-one million, nine hundred sixty thousand, seven hundred ninety-seven".