131501335986 has 12 divisors (see below), whose sum is σ = 284919561342. Its totient is φ = 43833778656.

The previous prime is 131501335963. The next prime is 131501336009. The reversal of 131501335986 is 689533105131.

131501335986 is a `hidden beast` number, since 1 + 3 + 1 + 50 + 1 + 3 + 3 + 598 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (131501335963) and next prime (131501336009).

It can be written as a sum of positive squares in only one way, i.e., 101167888761 + 30333447225 = 318069^2 + 174165^2 .

It is a super-2 number, since 2×131501335986² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3652814871 + ... + 3652814906.

Almost surely, 2^131501335986 is an apocalyptic number.

131501335986 is an abundant number, since it is smaller than the sum of its proper divisors (153418225356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131501335986 is a wasteful number, since it uses less digits than its factorization.

131501335986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305629785 (or 7305629782 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 131501335986 in words is "one hundred thirty-one billion, five hundred one million, three hundred thirty-five thousand, nine hundred eighty-six".