131674722257 has 4 divisors (see below), whose sum is σ = 141803547060. Its totient is φ = 121545897456.

The previous prime is 131674722253. The next prime is 131674722281. The reversal of 131674722257 is 752227476131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752227476131 = 536687 ⋅1401613.

It can be written as a sum of positive squares in 2 ways, for example, as 7472046481 + 124202675776 = 86441^2 + 352424^2 .

It is a cyclic number.

It is not a de Polignac number, because 131674722257 - 2² = 131674722253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131674722251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064412382 + ... + 5064412407.

It is an arithmetic number, because the mean of its divisors is an integer number (35450886765).

Almost surely, 2^131674722257 is an apocalyptic number.

It is an amenable number.

131674722257 is a deficient number, since it is larger than the sum of its proper divisors (10128824803).

131674722257 is a wasteful number, since it uses less digits than its factorization.

131674722257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128824802.

The product of its digits is 987840, while the sum is 47.

The spelling of 131674722257 in words is "one hundred thirty-one billion, six hundred seventy-four million, seven hundred twenty-two thousand, two hundred fifty-seven".