320231231 has 8 divisors (see below), whose sum is σ = 335093760. Its totient is φ = 305447032.

The previous prime is 320231221. The next prime is 320231237. The reversal of 320231231 is 132132023.

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 320231231 - 2²² = 316036927 is a prime.

It is a super-2 number, since 2×320231231² = 205096082615550722, 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 (320231237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11135 + ... + 27648.

It is an arithmetic number, because the mean of its divisors is an integer number (41886720).

Almost surely, 2^320231231 is an apocalyptic number.

320231231 is a deficient number, since it is larger than the sum of its proper divisors (14862529).

320231231 is a wasteful number, since it uses less digits than its factorization.

320231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39165.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320231231 is about 17895.0057557968. The cubic root of 320231231 is about 684.1550887741.

Adding to 320231231 its reverse (132132023), we get a palindrome (452363254).

The spelling of 320231231 in words is "three hundred twenty million, two hundred thirty-one thousand, two hundred thirty-one".