913332731 has 4 divisors (see below), whose sum is σ = 914080752. Its totient is φ = 912584712.

The previous prime is 913332713. The next prime is 913332743. The reversal of 913332731 is 137233319.

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

It is a cyclic number.

It is not a de Polignac number, because 913332731 - 2²⁶ = 846223867 is a prime.

It is a super-2 number, since 2×913332731² = 1668353355031836722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (913332751) 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, 372176 + ... + 374621.

It is an arithmetic number, because the mean of its divisors is an integer number (228520188).

Almost surely, 2^913332731 is an apocalyptic number.

913332731 is a deficient number, since it is larger than the sum of its proper divisors (748021).

913332731 is a wasteful number, since it uses less digits than its factorization.

913332731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748020.

The product of its digits is 10206, while the sum is 32.

The square root of 913332731 is about 30221.3952523705. The cubic root of 913332731 is about 970.2336670919.

The spelling of 913332731 in words is "nine hundred thirteen million, three hundred thirty-two thousand, seven hundred thirty-one".