131143144 has 32 divisors (see below), whose sum is σ = 276906240. Its totient is φ = 57686400.

The previous prime is 131143141. The next prime is 131143153. The reversal of 131143144 is 441341131.

It is a happy number.

It is a super-3 number, since 3×131143144³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (131143141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21309 + ... + 26764.

It is an arithmetic number, because the mean of its divisors is an integer number (8653320).

Almost surely, 2^131143144 is an apocalyptic number.

It is an amenable number.

131143144 is an abundant number, since it is smaller than the sum of its proper divisors (145763096).

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

131143144 is a wasteful number, since it uses less digits than its factorization.

131143144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48121 (or 48117 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 131143144 is about 11451.7747096247. The cubic root of 131143144 is about 508.0602259801.

Adding to 131143144 its reverse (441341131), we get a palindrome (572484275).

The spelling of 131143144 in words is "one hundred thirty-one million, one hundred forty-three thousand, one hundred forty-four".