331013013313 has 4 divisors (see below), whose sum is σ = 331037137540. Its totient is φ = 330988889088.

The previous prime is 331013013277. The next prime is 331013013361. The reversal of 331013013313 is 313310310133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313310310133 = 3037 ⋅103164409.

It can be written as a sum of positive squares in 2 ways, for example, as 140679755329 + 190333257984 = 375073^2 + 436272^2 .

It is a cyclic number.

It is not a de Polignac number, because 331013013313 - 2⁹ = 331013012801 is a prime.

It is a super-2 number, since 2×331013013313² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331013013413) 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, 12041520 + ... + 12068977.

It is an arithmetic number, because the mean of its divisors is an integer number (82759284385).

Almost surely, 2^331013013313 is an apocalyptic number.

It is an amenable number.

331013013313 is a deficient number, since it is larger than the sum of its proper divisors (24124227).

331013013313 is a wasteful number, since it uses less digits than its factorization.

331013013313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24124226.

The product of its (nonzero) digits is 729, while the sum is 22.

Adding to 331013013313 its reverse (313310310133), we get a palindrome (644323323446).

The spelling of 331013013313 in words is "three hundred thirty-one billion, thirteen million, thirteen thousand, three hundred thirteen".