131289872 has 40 divisors (see below), whose sum is σ = 297814272. Its totient is φ = 54892800.

The previous prime is 131289871. The next prime is 131289883. The reversal of 131289872 is 278982131.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (131289871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9704 + ... + 18887.

Almost surely, 2^131289872 is an apocalyptic number.

It is an amenable number.

131289872 is an abundant number, since it is smaller than the sum of its proper divisors (166524400).

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

131289872 is a wasteful number, since it uses less digits than its factorization.

131289872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28647 (or 28641 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 131289872 is about 11458.1792619945. The cubic root of 131289872 is about 508.2496344741.

The spelling of 131289872 in words is "one hundred thirty-one million, two hundred eighty-nine thousand, eight hundred seventy-two".