320786231 has 4 divisors (see below), whose sum is σ = 321038712. Its totient is φ = 320533752.

The previous prime is 320786203. The next prime is 320786261. The reversal of 320786231 is 132687023.

It is a happy number.

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 320786231 - 2¹⁰ = 320785207 is a prime.

It is a super-2 number, since 2×320786231² = 205807611998370722, 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 (320786261) 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, 124325 + ... + 126878.

It is an arithmetic number, because the mean of its divisors is an integer number (80259678).

Almost surely, 2^320786231 is an apocalyptic number.

320786231 is a deficient number, since it is larger than the sum of its proper divisors (252481).

320786231 is a wasteful number, since it uses less digits than its factorization.

320786231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252480.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 320786231 is about 17910.5061625851. The cubic root of 320786231 is about 684.5501022200.

The spelling of 320786231 in words is "three hundred twenty million, seven hundred eighty-six thousand, two hundred thirty-one".