31323313032313 has 4 divisors (see below), whose sum is σ = 31323324405888. Its totient is φ = 31323301658740.

The previous prime is 31323313032287. The next prime is 31323313032509. The reversal of 31323313032313 is 31323031332313.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31323313032313 - 2²⁵ = 31323279477881 is a prime.

It is a super-2 number, since 2×31323313032313² (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 (31323313036313) 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, 1331268 + ... + 8026138.

It is an arithmetic number, because the mean of its divisors is an integer number (7830831101472).

Almost surely, 2^{31323313032313} is an apocalyptic number.

It is an amenable number.

31323313032313 is a deficient number, since it is larger than the sum of its proper divisors (11373575).

31323313032313 is an equidigital number, since it uses as much as digits as its factorization.

31323313032313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11373574.

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

Adding to 31323313032313 its reverse (31323031332313), we get a palindrome (62646344364626).

The spelling of 31323313032313 in words is "thirty-one trillion, three hundred twenty-three billion, three hundred thirteen million, thirty-two thousand, three hundred thirteen".