31302223201313 has 4 divisors (see below), whose sum is σ = 31302236062128. Its totient is φ = 31302210340500.

The previous prime is 31302223201177. The next prime is 31302223201321. The reversal of 31302223201313 is 31310232220313.

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 31302223201313 - 2¹⁰ = 31302223200289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31302223201393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539563 + ... + 8060688.

It is an arithmetic number, because the mean of its divisors is an integer number (7825559015532).

Almost surely, 2^{31302223201313} is an apocalyptic number.

It is an amenable number.

31302223201313 is a deficient number, since it is larger than the sum of its proper divisors (12860815).

31302223201313 is an equidigital number, since it uses as much as digits as its factorization.

31302223201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12860814.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 31302223201313 its reverse (31310232220313), we get a palindrome (62612455421626).

The spelling of 31302223201313 in words is "thirty-one trillion, three hundred two billion, two hundred twenty-three million, two hundred one thousand, three hundred thirteen".