320322131 has 2 divisors, whose sum is σ = 320322132. Its totient is φ = 320322130.

The previous prime is 320322113. The next prime is 320322193. The reversal of 320322131 is 131223023.

Together with previous prime (320322113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320322131 - 2¹⁰ = 320321107 is a prime.

It is a super-2 number, since 2×320322131² = 205212535216762322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320322031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160161065 + 160161066.

It is an arithmetic number, because the mean of its divisors is an integer number (160161066).

Almost surely, 2^320322131 is an apocalyptic number.

320322131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320322131 is an equidigital number, since it uses as much as digits as its factorization.

320322131 is an evil number, because the sum of its binary digits is even.

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

The square root of 320322131 is about 17897.5453903601. The cubic root of 320322131 is about 684.2198168082.

Adding to 320322131 its reverse (131223023), we get a palindrome (451545154).

The spelling of 320322131 in words is "three hundred twenty million, three hundred twenty-two thousand, one hundred thirty-one".