331256713 has 6 divisors (see below), whose sum is σ = 351888926. Its totient is φ = 311770752.

The previous prime is 331256711. The next prime is 331256719. The reversal of 331256713 is 317652133.

It can be written as a sum of positive squares in 3 ways, for example, as 199741689 + 131515024 = 14133^2 + 11468^2 .

It is not a de Polignac number, because 331256713 - 2¹ = 331256711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (331256711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572820 + ... + 573397.

Almost surely, 2^331256713 is an apocalyptic number.

It is an amenable number.

331256713 is a deficient number, since it is larger than the sum of its proper divisors (20632213).

331256713 is a wasteful number, since it uses less digits than its factorization.

331256713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146251 (or 1146234 counting only the distinct ones).

The product of its digits is 11340, while the sum is 31.

The square root of 331256713 is about 18200.4591425601. The cubic root of 331256713 is about 691.9184258204.

It can be divided in two parts, 3312 and 56713, that added together give a square (60025 = 245²).

The spelling of 331256713 in words is "three hundred thirty-one million, two hundred fifty-six thousand, seven hundred thirteen".