131310431269 has 2 divisors, whose sum is σ = 131310431270. Its totient is φ = 131310431268.

The previous prime is 131310431267. The next prime is 131310431333. The reversal of 131310431269 is 962134013131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123033980644 + 8276450625 = 350762^2 + 90975^2 .

It is an emirp because it is prime and its reverse (962134013131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131310431269 - 2¹ = 131310431267 is a prime.

It is a super-2 number, since 2×131310431269² (a number of 23 digits) contains 22 as substring.

Together with 131310431267, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131310431267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655215634 + 65655215635.

It is an arithmetic number, because the mean of its divisors is an integer number (65655215635).

Almost surely, 2^131310431269 is an apocalyptic number.

It is an amenable number.

131310431269 is a deficient number, since it is larger than the sum of its proper divisors (1).

131310431269 is an equidigital number, since it uses as much as digits as its factorization.

131310431269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 131310431269 in words is "one hundred thirty-one billion, three hundred ten million, four hundred thirty-one thousand, two hundred sixty-nine".