131031310169 has 2 divisors, whose sum is σ = 131031310170. Its totient is φ = 131031310168.

The previous prime is 131031310127. The next prime is 131031310213. The reversal of 131031310169 is 961013130131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113005562569 + 18025747600 = 336163^2 + 134260^2 .

It is a cyclic number.

It is not a de Polignac number, because 131031310169 - 2²⁴ = 131014532953 is a prime.

It is a super-2 number, since 2×131031310169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131031313169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515655084 + 65515655085.

It is an arithmetic number, because the mean of its divisors is an integer number (65515655085).

Almost surely, 2^131031310169 is an apocalyptic number.

It is an amenable number.

131031310169 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031310169 is an equidigital number, since it uses as much as digits as its factorization.

131031310169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 131031310169 in words is "one hundred thirty-one billion, thirty-one million, three hundred ten thousand, one hundred sixty-nine".