131746783827321 has 60 divisors (see below), whose sum is σ = 213145115860908. Its totient is φ = 81061758101376.

The previous prime is 131746783827313. The next prime is 131746783827361. The reversal of 131746783827321 is 123728387647131.

It is a happy number.

131746783827321 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 467 + 8 + 3 + 82 + 73 + 21 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 57320964665721 + 74425819161600 = 7571061^2 + 8627040^2 .

It is not a de Polignac number, because 131746783827321 - 2³ = 131746783827313 is a prime.

It is a super-2 number, since 2×131746783827321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131746783827361) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 83722651 + ... + 85281743.

Almost surely, 2^{131746783827321} is an apocalyptic number.

It is an amenable number.

131746783827321 is a deficient number, since it is larger than the sum of its proper divisors (81398332033587).

131746783827321 is a wasteful number, since it uses less digits than its factorization.

131746783827321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565304 (or 1565282 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The spelling of 131746783827321 in words is "one hundred thirty-one trillion, seven hundred forty-six billion, seven hundred eighty-three million, eight hundred twenty-seven thousand, three hundred twenty-one".