320023231 has 8 divisors (see below), whose sum is σ = 349734528. Its totient is φ = 290415000.

The previous prime is 320023217. The next prime is 320023307. The reversal of 320023231 is 132320023.

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

It is a cyclic number.

It is not a de Polignac number, because 320023231 - 2²³ = 311634623 is a prime.

It is a super-2 number, since 2×320023231² = 204829736759358722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023031) 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, 19195 + ... + 31756.

It is an arithmetic number, because the mean of its divisors is an integer number (43716816).

Almost surely, 2^320023231 is an apocalyptic number.

320023231 is a deficient number, since it is larger than the sum of its proper divisors (29711297).

320023231 is a wasteful number, since it uses less digits than its factorization.

320023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51533.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320023231 is about 17889.1931344038. The cubic root of 320023231 is about 684.0069301248.

Adding to 320023231 its reverse (132320023), we get a palindrome (452343254).

The spelling of 320023231 in words is "three hundred twenty million, twenty-three thousand, two hundred thirty-one".