131389987593 has 16 divisors (see below), whose sum is σ = 176548973312. Its totient is φ = 86914674000.

The previous prime is 131389987579. The next prime is 131389987627. The reversal of 131389987593 is 395789983131.

It is not a de Polignac number, because 131389987593 - 2⁹ = 131389987081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131389987513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104023 + ... + 523068.

It is an arithmetic number, because the mean of its divisors is an integer number (11034310832).

Almost surely, 2^131389987593 is an apocalyptic number.

It is an amenable number.

131389987593 is a deficient number, since it is larger than the sum of its proper divisors (45158985719).

131389987593 is a wasteful number, since it uses less digits than its factorization.

131389987593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627636.

The product of its digits is 44089920, while the sum is 66.

The spelling of 131389987593 in words is "one hundred thirty-one billion, three hundred eighty-nine million, nine hundred eighty-seven thousand, five hundred ninety-three".