31312232112997 has 32 divisors (see below), whose sum is σ = 34578388672128. Its totient is φ = 28118119680000.

The previous prime is 31312232112977. The next prime is 31312232113003. The reversal of 31312232112997 is 79921123221313.

It is a cyclic number.

It is not a de Polignac number, because 31312232112997 - 2¹⁵ = 31312232080229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312232112977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2461453597 + ... + 2461466317.

It is an arithmetic number, because the mean of its divisors is an integer number (1080574646004).

Almost surely, 2^{31312232112997} is an apocalyptic number.

It is an amenable number.

31312232112997 is a deficient number, since it is larger than the sum of its proper divisors (3266156559131).

31312232112997 is a wasteful number, since it uses less digits than its factorization.

31312232112997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20821.

The product of its digits is 244944, while the sum is 46.

The spelling of 31312232112997 in words is "thirty-one trillion, three hundred twelve billion, two hundred thirty-two million, one hundred twelve thousand, nine hundred ninety-seven".