131344140 has 48 divisors (see below), whose sum is σ = 368347392. Its totient is φ = 34969536.

The previous prime is 131344139. The next prime is 131344141. The reversal of 131344140 is 41443131.

It is an interprime number because it is at equal distance from previous prime (131344139) and next prime (131344141).

It is a super-2 number, since 2×131344140² = 34502566224679200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131344141) 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 15 ways as a sum of consecutive naturals, for example, 48297 + ... + 50943.

It is an arithmetic number, because the mean of its divisors is an integer number (7673904).

Almost surely, 2^131344140 is an apocalyptic number.

131344140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131344140 is an abundant number, since it is smaller than the sum of its proper divisors (237003252).

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

131344140 is a wasteful number, since it uses less digits than its factorization.

131344140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 131344140 is about 11460.5471073592. The cubic root of 131344140 is about 508.3196522939.

Adding to 131344140 its reverse (41443131), we get a palindrome (172787271).

The spelling of 131344140 in words is "one hundred thirty-one million, three hundred forty-four thousand, one hundred forty".