331013033213 has 4 divisors (see below), whose sum is σ = 331443480060. Its totient is φ = 330582586368.

The previous prime is 331013033189. The next prime is 331013033261. The reversal of 331013033213 is 312330310133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61316654884 + 269696378329 = 247622^2 + 519323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331013033213 is a prime.

It is a super-2 number, since 2×331013033213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331013033293) 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, 215222270 + ... + 215223807.

It is an arithmetic number, because the mean of its divisors is an integer number (82860870015).

Almost surely, 2^331013033213 is an apocalyptic number.

It is an amenable number.

331013033213 is a deficient number, since it is larger than the sum of its proper divisors (430446847).

331013033213 is an equidigital number, since it uses as much as digits as its factorization.

331013033213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430446846.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 331013033213 its reverse (312330310133), we get a palindrome (643343343346).

The spelling of 331013033213 in words is "three hundred thirty-one billion, thirteen million, thirty-three thousand, two hundred thirteen".