320013131 has 2 divisors, whose sum is σ = 320013132. Its totient is φ = 320013130.

The previous prime is 320013101. The next prime is 320013163. The reversal of 320013131 is 131310023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320013131 - 2¹⁰ = 320012107 is a prime.

It is a super-2 number, since 2×320013131² = 204816808024846322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320013101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160006565 + 160006566.

It is an arithmetic number, because the mean of its divisors is an integer number (160006566).

Almost surely, 2^320013131 is an apocalyptic number.

320013131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320013131 is an equidigital number, since it uses as much as digits as its factorization.

320013131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 320013131 is about 17888.9108388409. The cubic root of 320013131 is about 683.9997342486. Note that the first 3 decimals are identical.

Adding to 320013131 its reverse (131310023), we get a palindrome (451323154).

The spelling of 320013131 in words is "three hundred twenty million, thirteen thousand, one hundred thirty-one".