331713493 has 4 divisors (see below), whose sum is σ = 339804108. Its totient is φ = 323622880.

The previous prime is 331713463. The next prime is 331713509. The reversal of 331713493 is 394317133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394317133 = 7 ⋅56331019.

It can be written as a sum of positive squares in 2 ways, for example, as 11410884 + 320302609 = 3378^2 + 17897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331713493 is a prime.

It is a super-2 number, since 2×331713493² = 220067682876522098, which 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 (331713433) 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, 4045246 + ... + 4045327.

It is an arithmetic number, because the mean of its divisors is an integer number (84951027).

Almost surely, 2^331713493 is an apocalyptic number.

It is an amenable number.

331713493 is a deficient number, since it is larger than the sum of its proper divisors (8090615).

331713493 is an equidigital number, since it uses as much as digits as its factorization.

331713493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8090614.

The product of its digits is 20412, while the sum is 34.

The square root of 331713493 is about 18213.0034041615. The cubic root of 331713493 is about 692.2363155666.

The spelling of 331713493 in words is "three hundred thirty-one million, seven hundred thirteen thousand, four hundred ninety-three".