131540332 has 24 divisors (see below), whose sum is σ = 286997760. Its totient is φ = 51249360.

The previous prime is 131540267. The next prime is 131540333. The reversal of 131540332 is 233045131.

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 (131540333) 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, 213232 + ... + 213847.

It is an arithmetic number, because the mean of its divisors is an integer number (11958240).

Almost surely, 2^131540332 is an apocalyptic number.

It is an amenable number.

131540332 is an abundant number, since it is smaller than the sum of its proper divisors (155457428).

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

131540332 is a wasteful number, since it uses less digits than its factorization.

131540332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427101 (or 427099 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 131540332 is about 11469.1033651284. The cubic root of 131540332 is about 508.5726229374.

Adding to 131540332 its reverse (233045131), we get a palindrome (364585463).

The spelling of 131540332 in words is "one hundred thirty-one million, five hundred forty thousand, three hundred thirty-two".