131172136745 has 32 divisors (see below), whose sum is σ = 177047216640. Its totient is φ = 92650072320.

The previous prime is 131172136721. The next prime is 131172136747. The reversal of 131172136745 is 547631271131.

It is not a de Polignac number, because 131172136745 - 2²⁴ = 131155359529 is a prime.

It is a super-2 number, since 2×131172136745² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131172136747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320321 + ... + 604110.

It is an arithmetic number, because the mean of its divisors is an integer number (5532725520).

Almost surely, 2^131172136745 is an apocalyptic number.

It is an amenable number.

131172136745 is a deficient number, since it is larger than the sum of its proper divisors (45875079895).

131172136745 is a wasteful number, since it uses less digits than its factorization.

131172136745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924545.

The product of its digits is 105840, while the sum is 41.

The spelling of 131172136745 in words is "one hundred thirty-one billion, one hundred seventy-two million, one hundred thirty-six thousand, seven hundred forty-five".