131420560 has 40 divisors (see below), whose sum is σ = 306605376. Its totient is φ = 52387200.

The previous prime is 131420521. The next prime is 131420561. The reversal of 131420560 is 65024131.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (131420561) 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 7 ways as a sum of consecutive naturals, for example, 21885 + ... + 27235.

Almost surely, 2^131420560 is an apocalyptic number.

131420560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131420560 is an abundant number, since it is smaller than the sum of its proper divisors (175184816).

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

131420560 is a wasteful number, since it uses less digits than its factorization.

131420560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671 (or 5665 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131420560 is about 11463.8806693022. The cubic root of 131420560 is about 508.4182184382.

Adding to 131420560 its reverse (65024131), we get a palindrome (196444691).

The spelling of 131420560 in words is "one hundred thirty-one million, four hundred twenty thousand, five hundred sixty".