131274917 has 2 divisors, whose sum is σ = 131274918. Its totient is φ = 131274916.

The previous prime is 131274893. The next prime is 131274929. The reversal of 131274917 is 719472131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69322276 + 61952641 = 8326^2 + 7871^2 .

It is a cyclic number.

It is not a de Polignac number, because 131274917 - 2¹⁰ = 131273893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131274977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65637458 + 65637459.

It is an arithmetic number, because the mean of its divisors is an integer number (65637459).

Almost surely, 2^131274917 is an apocalyptic number.

It is an amenable number.

131274917 is a deficient number, since it is larger than the sum of its proper divisors (1).

131274917 is an equidigital number, since it uses as much as digits as its factorization.

131274917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 131274917 is about 11457.5266528165. The cubic root of 131274917 is about 508.2303357986.

The spelling of 131274917 in words is "one hundred thirty-one million, two hundred seventy-four thousand, nine hundred seventeen".