320152331 has 8 divisors (see below), whose sum is σ = 328851264. Its totient is φ = 311568840.

The previous prime is 320152321. The next prime is 320152361. The reversal of 320152331 is 133251023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320152331 is a prime.

It is a super-2 number, since 2×320152331² = 204995030089467122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320152321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23225 + ... + 34346.

It is an arithmetic number, because the mean of its divisors is an integer number (41106408).

Almost surely, 2^320152331 is an apocalyptic number.

320152331 is a deficient number, since it is larger than the sum of its proper divisors (8698933).

320152331 is an equidigital number, since it uses as much as digits as its factorization.

320152331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57721.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 320152331 is about 17892.8010942949. The cubic root of 320152331 is about 684.0988957640.

The spelling of 320152331 in words is "three hundred twenty million, one hundred fifty-two thousand, three hundred thirty-one".