131320337 has 2 divisors, whose sum is σ = 131320338. Its totient is φ = 131320336.

The previous prime is 131320327. The next prime is 131320339. The reversal of 131320337 is 733023131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77018176 + 54302161 = 8776^2 + 7369^2 .

It is a cyclic number.

It is not a de Polignac number, because 131320337 - 2⁸ = 131320081 is a prime.

Together with 131320339, 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 (131320339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65660168 + 65660169.

It is an arithmetic number, because the mean of its divisors is an integer number (65660169).

Almost surely, 2^131320337 is an apocalyptic number.

It is an amenable number.

131320337 is a deficient number, since it is larger than the sum of its proper divisors (1).

131320337 is an equidigital number, since it uses as much as digits as its factorization.

131320337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 23.

The square root of 131320337 is about 11459.5085845773. The cubic root of 131320337 is about 508.2889434916.

Adding to 131320337 its reverse (733023131), we get a palindrome (864343468).

The spelling of 131320337 in words is "one hundred thirty-one million, three hundred twenty thousand, three hundred thirty-seven".