320231023213 has 2 divisors, whose sum is σ = 320231023214. Its totient is φ = 320231023212.

The previous prime is 320231023193. The next prime is 320231023243. The reversal of 320231023213 is 312320132023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223632518404 + 96598504809 = 472898^2 + 310803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320231023213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320231023243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160115511606 + 160115511607.

It is an arithmetic number, because the mean of its divisors is an integer number (160115511607).

Almost surely, 2^320231023213 is an apocalyptic number.

It is an amenable number.

320231023213 is a deficient number, since it is larger than the sum of its proper divisors (1).

320231023213 is an equidigital number, since it uses as much as digits as its factorization.

320231023213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 320231023213 its reverse (312320132023), we get a palindrome (632551155236).

The spelling of 320231023213 in words is "three hundred twenty billion, two hundred thirty-one million, twenty-three thousand, two hundred thirteen".