131551140 has 96 divisors (see below), whose sum is σ = 422795520. Its totient is φ = 29938176.

The previous prime is 131551127. The next prime is 131551153. The reversal of 131551140 is 41155131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131551127) and next prime (131551153).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122526 + ... + 123594.

It is an arithmetic number, because the mean of its divisors is an integer number (4404120).

Almost surely, 2^131551140 is an apocalyptic number.

131551140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131551140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211397760).

131551140 is an abundant number, since it is smaller than the sum of its proper divisors (291244380).

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

131551140 is a wasteful number, since it uses less digits than its factorization.

131551140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 131551140 is about 11469.5745343932. The cubic root of 131551140 is about 508.5865514978.

The spelling of 131551140 in words is "one hundred thirty-one million, five hundred fifty-one thousand, one hundred forty".