131508397330869 has 16 divisors (see below), whose sum is σ = 188970103429632. Its totient is φ = 80869301838528.

The previous prime is 131508397330867. The next prime is 131508397330883. The reversal of 131508397330869 is 968033793805131.

It is not a de Polignac number, because 131508397330869 - 2¹ = 131508397330867 is a prime.

It is a super-2 number, since 2×131508397330869² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131508397330867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227918117 + ... + 1228025210.

It is an arithmetic number, because the mean of its divisors is an integer number (11810631464352).

Almost surely, 2^{131508397330869} is an apocalyptic number.

It is an amenable number.

131508397330869 is a deficient number, since it is larger than the sum of its proper divisors (57461706098763).

131508397330869 is a wasteful number, since it uses less digits than its factorization.

131508397330869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455944716.

The product of its (nonzero) digits is 88179840, while the sum is 66.

The spelling of 131508397330869 in words is "one hundred thirty-one trillion, five hundred eight billion, three hundred ninety-seven million, three hundred thirty thousand, eight hundred sixty-nine".