131044140 has 72 divisors (see below), whose sum is σ = 418432560. Its totient is φ = 33105024.

The previous prime is 131044129. The next prime is 131044153. The reversal of 131044140 is 41440131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15739 + ... + 22578.

Almost surely, 2^131044140 is an apocalyptic number.

131044140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131044140 is an abundant number, since it is smaller than the sum of its proper divisors (287388420).

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

131044140 is a wasteful number, since it uses less digits than its factorization.

131044140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38351 (or 38346 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 131044140 is about 11447.4512447095. The cubic root of 131044140 is about 507.9323436879.

Adding to 131044140 its reverse (41440131), we get a palindrome (172484271).

The spelling of 131044140 in words is "one hundred thirty-one million, forty-four thousand, one hundred forty".