31312007999 has 8 divisors (see below), whose sum is σ = 33088262640. Its totient is φ = 29548578816.

The previous prime is 31312007983. The next prime is 31312008029. The reversal of 31312007999 is 99970021313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31312007999 - 2⁴ = 31312007983 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 (31312007299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3201344 + ... + 3211109.

It is an arithmetic number, because the mean of its divisors is an integer number (4136032830).

Almost surely, 2^31312007999 is an apocalyptic number.

31312007999 is a deficient number, since it is larger than the sum of its proper divisors (1776254641).

31312007999 is a wasteful number, since it uses less digits than its factorization.

31312007999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412729.

The product of its (nonzero) digits is 91854, while the sum is 44.

The spelling of 31312007999 in words is "thirty-one billion, three hundred twelve million, seven thousand, nine hundred ninety-nine".