320451231 has 8 divisors (see below), whose sum is σ = 431416960. Its totient is φ = 211559832.

The previous prime is 320451221. The next prime is 320451233. The reversal of 320451231 is 132154023.

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

It is not a de Polignac number, because 320451231 - 2⁵ = 320451199 is a prime.

It is a super-2 number, since 2×320451231² = 205377982898830722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320451198 and 320451207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320451233) 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, 518221 + ... + 518838.

It is an arithmetic number, because the mean of its divisors is an integer number (53927120).

Almost surely, 2^320451231 is an apocalyptic number.

320451231 is a deficient number, since it is larger than the sum of its proper divisors (110965729).

320451231 is a wasteful number, since it uses less digits than its factorization.

320451231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037165.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 320451231 is about 17901.1516668621. The cubic root of 320451231 is about 684.3117252399.

The spelling of 320451231 in words is "three hundred twenty million, four hundred fifty-one thousand, two hundred thirty-one".