31320332303313 has 4 divisors (see below), whose sum is σ = 41760443071088. Its totient is φ = 20880221535540.

The previous prime is 31320332303297. The next prime is 31320332303341. The reversal of 31320332303313 is 31330323302313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31320332303313 - 2⁴ = 31320332303297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320332303363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220055383883 + ... + 5220055383888.

It is an arithmetic number, because the mean of its divisors is an integer number (10440110767772).

Almost surely, 2^{31320332303313} is an apocalyptic number.

It is an amenable number.

31320332303313 is a deficient number, since it is larger than the sum of its proper divisors (10440110767775).

31320332303313 is a wasteful number, since it uses less digits than its factorization.

31320332303313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440110767774.

The product of its (nonzero) digits is 26244, while the sum is 30.

Adding to 31320332303313 its reverse (31330323302313), we get a palindrome (62650655605626).

The spelling of 31320332303313 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirty-two million, three hundred three thousand, three hundred thirteen".