131329781279 has 2 divisors, whose sum is σ = 131329781280. Its totient is φ = 131329781278.

The previous prime is 131329781257. The next prime is 131329781333. The reversal of 131329781279 is 972187923131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131329781279 - 2²⁴ = 131313004063 is a prime.

It is a super-2 number, since 2×131329781279² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131329781279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131329781249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65664890639 + 65664890640.

It is an arithmetic number, because the mean of its divisors is an integer number (65664890640).

Almost surely, 2^131329781279 is an apocalyptic number.

131329781279 is a deficient number, since it is larger than the sum of its proper divisors (1).

131329781279 is an equidigital number, since it uses as much as digits as its factorization.

131329781279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The spelling of 131329781279 in words is "one hundred thirty-one billion, three hundred twenty-nine million, seven hundred eighty-one thousand, two hundred seventy-nine".