131135009 has 2 divisors, whose sum is σ = 131135010. Its totient is φ = 131135008.

The previous prime is 131134973. The next prime is 131135033. The reversal of 131135009 is 900531131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118744609 + 12390400 = 10897^2 + 3520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131135009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131135099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65567504 + 65567505.

It is an arithmetic number, because the mean of its divisors is an integer number (65567505).

Almost surely, 2^131135009 is an apocalyptic number.

It is an amenable number.

131135009 is a deficient number, since it is larger than the sum of its proper divisors (1).

131135009 is an equidigital number, since it uses as much as digits as its factorization.

131135009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 131135009 is about 11451.4195189941. The cubic root of 131135009 is about 508.0497205246.

The spelling of 131135009 in words is "one hundred thirty-one million, one hundred thirty-five thousand, nine".