31310023113373 has 2 divisors, whose sum is σ = 31310023113374. Its totient is φ = 31310023113372.

The previous prime is 31310023113311. The next prime is 31310023113419. The reversal of 31310023113373 is 37331132001313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24888654255609 + 6421368857764 = 4988853^2 + 2534042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31310023113373 is a prime.

It is a super-2 number, since 2×31310023113373² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31310023713373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655011556686 + 15655011556687.

It is an arithmetic number, because the mean of its divisors is an integer number (15655011556687).

Almost surely, 2^{31310023113373} is an apocalyptic number.

It is an amenable number.

31310023113373 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310023113373 is an equidigital number, since it uses as much as digits as its factorization.

31310023113373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 31.

Adding to 31310023113373 its reverse (37331132001313), we get a palindrome (68641155114686).

The spelling of 31310023113373 in words is "thirty-one trillion, three hundred ten billion, twenty-three million, one hundred thirteen thousand, three hundred seventy-three".