131538549318 has 64 divisors (see below), whose sum is σ = 287772134400. Its totient is φ = 39752156160.

The previous prime is 131538549287. The next prime is 131538549347. The reversal of 131538549318 is 813945835131.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 50727030 + ... + 50729622.

It is an arithmetic number, because the mean of its divisors is an integer number (4496439600).

Almost surely, 2^131538549318 is an apocalyptic number.

131538549318 is an abundant number, since it is smaller than the sum of its proper divisors (156233585082).

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

131538549318 is a wasteful number, since it uses less digits than its factorization.

131538549318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397.

The product of its digits is 1555200, while the sum is 51.

The spelling of 131538549318 in words is "one hundred thirty-one billion, five hundred thirty-eight million, five hundred forty-nine thousand, three hundred eighteen".