131182317913 has 2 divisors, whose sum is σ = 131182317914. Its totient is φ = 131182317912.

The previous prime is 131182317859. The next prime is 131182317919. The reversal of 131182317913 is 319713281131.

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., 81565646409 + 49616671504 = 285597^2 + 222748^2 .

It is a cyclic number.

It is not a de Polignac number, because 131182317913 - 2⁹ = 131182317401 is a prime.

It is not a weakly prime, because it can be changed into another prime (131182317919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65591158956 + 65591158957.

It is an arithmetic number, because the mean of its divisors is an integer number (65591158957).

Almost surely, 2^131182317913 is an apocalyptic number.

It is an amenable number.

131182317913 is a deficient number, since it is larger than the sum of its proper divisors (1).

131182317913 is an equidigital number, since it uses as much as digits as its factorization.

131182317913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 40.

The spelling of 131182317913 in words is "one hundred thirty-one billion, one hundred eighty-two million, three hundred seventeen thousand, nine hundred thirteen".