131493280 has 24 divisors (see below), whose sum is σ = 310653252. Its totient is φ = 52597248.

The previous prime is 131493253. The next prime is 131493287. The reversal of 131493280 is 82394131.

It can be written as a sum of positive squares in 2 ways, for example, as 127509264 + 3984016 = 11292^2 + 1996^2 .

It is not an unprimeable number, because it can be changed into a prime (131493287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410757 + ... + 411076.

Almost surely, 2^131493280 is an apocalyptic number.

131493280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131493280 is an abundant number, since it is smaller than the sum of its proper divisors (179159972).

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

131493280 is an equidigital number, since it uses as much as digits as its factorization.

131493280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821848 (or 821840 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 131493280 is about 11467.0519315123. The cubic root of 131493280 is about 508.5119768668.

The spelling of 131493280 in words is "one hundred thirty-one million, four hundred ninety-three thousand, two hundred eighty".