320000231 has 4 divisors (see below), whose sum is σ = 338823792. Its totient is φ = 301176672.

The previous prime is 320000227. The next prime is 320000251. The reversal of 320000231 is 132000023.

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 320000231 - 2² = 320000227 is a prime.

It is a super-2 number, since 2×320000231² = 204800295680106722, 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 (320000201) 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, 9411755 + ... + 9411788.

It is an arithmetic number, because the mean of its divisors is an integer number (84705948).

Almost surely, 2^320000231 is an apocalyptic number.

320000231 is a deficient number, since it is larger than the sum of its proper divisors (18823561).

320000231 is a wasteful number, since it uses less digits than its factorization.

320000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18823560.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 320000231 is about 17888.5502766434. The cubic root of 320000231 is about 683.9905432558.

Adding to 320000231 its reverse (132000023), we get a palindrome (452000254).

The spelling of 320000231 in words is "three hundred twenty million, two hundred thirty-one", and thus it is an aban number.