131297280 has 104 divisors (see below), whose sum is σ = 420296592. Its totient is φ = 34996224.

The previous prime is 131297269. The next prime is 131297311. The reversal of 131297280 is 82792131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60372 + ... + 62508.

Almost surely, 2^131297280 is an apocalyptic number.

131297280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131297280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210148296).

131297280 is an abundant number, since it is smaller than the sum of its proper divisors (288999312).

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

131297280 is an equidigital number, since it uses as much as digits as its factorization.

131297280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169 (or 2147 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 131297280 is about 11458.5025199631. The cubic root of 131297280 is about 508.2591935828.

The spelling of 131297280 in words is "one hundred thirty-one million, two hundred ninety-seven thousand, two hundred eighty".