331433457 has 16 divisors (see below), whose sum is σ = 454905600. Its totient is φ = 214486272.

The previous prime is 331433449. The next prime is 331433477. The reversal of 331433457 is 754334133.

It is not a de Polignac number, because 331433457 - 2³ = 331433449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (331433477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48169 + ... + 54617.

It is an arithmetic number, because the mean of its divisors is an integer number (28431600).

Almost surely, 2^331433457 is an apocalyptic number.

331433457 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

331433457 is a deficient number, since it is larger than the sum of its proper divisors (123472143).

331433457 is a wasteful number, since it uses less digits than its factorization.

331433457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6952.

The product of its digits is 45360, while the sum is 33.

The square root of 331433457 is about 18205.3139769684. The cubic root of 331433457 is about 692.0414630117.

The spelling of 331433457 in words is "three hundred thirty-one million, four hundred thirty-three thousand, four hundred fifty-seven".