31323013120313 has 8 divisors (see below), whose sum is σ = 31523073641928. Its totient is φ = 31122959572224.

The previous prime is 31323013120277. The next prime is 31323013120351. The reversal of 31323013120313 is 31302131032313.

It can be written as a sum of positive squares in 4 ways, for example, as 2829537787129 + 28493475333184 = 1682123^2 + 5337928^2 .

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 31323013120313 - 2²² = 31323008926009 is a prime.

It is a super-2 number, since 2×31323013120313² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323013128313) 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, 7422095 + ... + 10850507.

It is an arithmetic number, because the mean of its divisors is an integer number (3940384205241).

Almost surely, 2^{31323013120313} is an apocalyptic number.

It is an amenable number.

31323013120313 is a deficient number, since it is larger than the sum of its proper divisors (200060521615).

31323013120313 is a wasteful number, since it uses less digits than its factorization.

31323013120313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486763.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31323013120313 its reverse (31302131032313), we get a palindrome (62625144152626).

The spelling of 31323013120313 in words is "thirty-one trillion, three hundred twenty-three billion, thirteen million, one hundred twenty thousand, three hundred thirteen".