31320333231313 has 4 divisors (see below), whose sum is σ = 35794666550080. Its totient is φ = 26845999912548.

The previous prime is 31320333231311. The next prime is 31320333231367. The reversal of 31320333231313 is 31313233302313.

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 a cyclic number.

It is not a de Polignac number, because 31320333231313 - 2¹ = 31320333231311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320333231311) 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, 2237166659373 + ... + 2237166659386.

It is an arithmetic number, because the mean of its divisors is an integer number (8948666637520).

Almost surely, 2^{31320333231313} is an apocalyptic number.

It is an amenable number.

31320333231313 is a deficient number, since it is larger than the sum of its proper divisors (4474333318767).

31320333231313 is an equidigital number, since it uses as much as digits as its factorization.

31320333231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474333318766.

The product of its (nonzero) digits is 26244, while the sum is 31.

Adding to 31320333231313 its reverse (31313233302313), we get a palindrome (62633566533626).

The spelling of 31320333231313 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirty-three million, two hundred thirty-one thousand, three hundred thirteen".