31232001313 has 6 divisors (see below), whose sum is σ = 31396293222. Its totient is φ = 31067735040.

The previous prime is 31232001301. The next prime is 31232001337. The reversal of 31232001313 is 31310023213.

It can be written as a sum of positive squares in 3 ways, for example, as 12537728784 + 18694272529 = 111972^2 + 136727^2 .

It is not a de Polignac number, because 31232001313 - 2⁹ = 31232000801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31232001113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2448793 + ... + 2461513.

It is an arithmetic number, because the mean of its divisors is an integer number (5232715537).

Almost surely, 2^31232001313 is an apocalyptic number.

It is an amenable number.

31232001313 is a deficient number, since it is larger than the sum of its proper divisors (164291909).

31232001313 is an frugal number, since it uses more digits than its factorization.

31232001313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25635 (or 12914 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31232001313 its reverse (31310023213), we get a palindrome (62542024526).

The spelling of 31232001313 in words is "thirty-one billion, two hundred thirty-two million, one thousand, three hundred thirteen".