131354778713 has 8 divisors (see below), whose sum is σ = 139085556840. Its totient is φ = 123624448000.

The previous prime is 131354778707. The next prime is 131354778719. The reversal of 131354778713 is 317877453131.

It is an interprime number because it is at equal distance from previous prime (131354778707) and next prime (131354778719).

It can be written as a sum of positive squares in 4 ways, for example, as 65227627609 + 66127151104 = 255397^2 + 257152^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131354778713 - 2⁴ = 131354778697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131354778719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635213 + ... + 816213.

It is an arithmetic number, because the mean of its divisors is an integer number (17385694605).

Almost surely, 2^131354778713 is an apocalyptic number.

It is an amenable number.

131354778713 is a deficient number, since it is larger than the sum of its proper divisors (7730778127).

131354778713 is a wasteful number, since it uses less digits than its factorization.

131354778713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223707.

The product of its digits is 1481760, while the sum is 50.

The spelling of 131354778713 in words is "one hundred thirty-one billion, three hundred fifty-four million, seven hundred seventy-eight thousand, seven hundred thirteen".