320133131 has 2 divisors, whose sum is σ = 320133132. Its totient is φ = 320133130.

The previous prime is 320133127. The next prime is 320133133. The reversal of 320133131 is 131331023.

It is a strong prime.

It is an emirp because it is prime and its reverse (131331023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320133131 - 2² = 320133127 is a prime.

It is a super-2 number, since 2×320133131² = 204970443127726322, which contains 22 as substring.

Together with 320133133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320133133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160066565 + 160066566.

It is an arithmetic number, because the mean of its divisors is an integer number (160066566).

Almost surely, 2^320133131 is an apocalyptic number.

320133131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320133131 is an equidigital number, since it uses as much as digits as its factorization.

320133131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 320133131 is about 17892.2645576238. The cubic root of 320133131 is about 684.0852200227.

Adding to 320133131 its reverse (131331023), we get a palindrome (451464154).

The spelling of 320133131 in words is "three hundred twenty million, one hundred thirty-three thousand, one hundred thirty-one".