320020231 has 8 divisors (see below), whose sum is σ = 325382400. Its totient is φ = 314691000.

The previous prime is 320020193. The next prime is 320020243. The reversal of 320020231 is 132020023.

It is a happy number.

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 320020231 - 2¹⁷ = 319889159 is a prime.

It is a super-2 number, since 2×320020231² = 204825896498586722, 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 (320020271) 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, 11760 + ... + 27898.

It is an arithmetic number, because the mean of its divisors is an integer number (40672800).

Almost surely, 2^320020231 is an apocalyptic number.

320020231 is a deficient number, since it is larger than the sum of its proper divisors (5362169).

320020231 is a wasteful number, since it uses less digits than its factorization.

320020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320020231 is about 17889.1092847017. The cubic root of 320020231 is about 684.0047927517.

Adding to 320020231 its reverse (132020023), we get a palindrome (452040254).

The spelling of 320020231 in words is "three hundred twenty million, twenty thousand, two hundred thirty-one".