131395613 has 2 divisors, whose sum is σ = 131395614. Its totient is φ = 131395612.

The previous prime is 131395571. The next prime is 131395633. The reversal of 131395613 is 316593131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110208004 + 21187609 = 10498^2 + 4603^2 .

It is an emirp because it is prime and its reverse (316593131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131395613 - 2²⁶ = 64286749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131395613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131395633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65697806 + 65697807.

It is an arithmetic number, because the mean of its divisors is an integer number (65697807).

Almost surely, 2^131395613 is an apocalyptic number.

It is an amenable number.

131395613 is a deficient number, since it is larger than the sum of its proper divisors (1).

131395613 is an equidigital number, since it uses as much as digits as its factorization.

131395613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 32.

The square root of 131395613 is about 11462.7925480661. The cubic root of 131395613 is about 508.3860461207.

The spelling of 131395613 in words is "one hundred thirty-one million, three hundred ninety-five thousand, six hundred thirteen".