131540460 has 24 divisors (see below), whose sum is σ = 368313456. Its totient is φ = 35077440.

The previous prime is 131540449. The next prime is 131540467. The reversal of 131540460 is 64045131.

It is a self number, because there is not a number n which added to its sum of digits gives 131540460.

It is not an unprimeable number, because it can be changed into a prime (131540467) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1096111 + ... + 1096230.

It is an arithmetic number, because the mean of its divisors is an integer number (15346394).

Almost surely, 2^131540460 is an apocalyptic number.

131540460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131540460 is an abundant number, since it is smaller than the sum of its proper divisors (236772996).

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

131540460 is a wasteful number, since it uses less digits than its factorization.

131540460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2192353 (or 2192351 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 131540460 is about 11469.1089453366. The cubic root of 131540460 is about 508.5727878989.

Adding to 131540460 its reverse (64045131), we get a palindrome (195585591).

The spelling of 131540460 in words is "one hundred thirty-one million, five hundred forty thousand, four hundred sixty".