131840680 has 32 divisors (see below), whose sum is σ = 302243400. Its totient is φ = 51740416.

The previous prime is 131840609. The next prime is 131840689. The reversal of 131840680 is 86048131.

It can be written as a sum of positive squares in 4 ways, for example, as 94361796 + 37478884 = 9714^2 + 6122^2 .

It is not an unprimeable number, because it can be changed into a prime (131840689) 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, 28975 + ... + 33214.

Almost surely, 2^131840680 is an apocalyptic number.

131840680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131840680 is an abundant number, since it is smaller than the sum of its proper divisors (170402720).

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

131840680 is a wasteful number, since it uses less digits than its factorization.

131840680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62253 (or 62249 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 131840680 is about 11482.1896866408. The cubic root of 131840680 is about 508.9594058534.

The spelling of 131840680 in words is "one hundred thirty-one million, eight hundred forty thousand, six hundred eighty".