31313340225321 has 64 divisors (see below), whose sum is σ = 52464960700416. Its totient is φ = 16138107835200.

The previous prime is 31313340225289. The next prime is 31313340225383. The reversal of 31313340225321 is 12352204331313.

It is not a de Polignac number, because 31313340225321 - 2⁵ = 31313340225289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (31313340224321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112643926 + ... + 112921568.

It is an arithmetic number, because the mean of its divisors is an integer number (819765010944).

Almost surely, 2^{31313340225321} is an apocalyptic number.

It is an amenable number.

31313340225321 is a deficient number, since it is larger than the sum of its proper divisors (21151620475095).

31313340225321 is a wasteful number, since it uses less digits than its factorization.

31313340225321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281522.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 31313340225321 its reverse (12352204331313), we get a palindrome (43665544556634).

The spelling of 31313340225321 in words is "thirty-one trillion, three hundred thirteen billion, three hundred forty million, two hundred twenty-five thousand, three hundred twenty-one".