131807280 has 80 divisors (see below), whose sum is σ = 445757184. Its totient is φ = 31952640.

The previous prime is 131807279. The next prime is 131807287. The reversal of 131807280 is 82708131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (131807287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22324 + ... + 27603.

Almost surely, 2^131807280 is an apocalyptic number.

131807280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131807280 is an abundant number, since it is smaller than the sum of its proper divisors (313949904).

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

131807280 is a wasteful number, since it uses less digits than its factorization.

131807280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49954 (or 49948 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 131807280 is about 11480.7351680979. The cubic root of 131807280 is about 508.9164229646.

The spelling of 131807280 in words is "one hundred thirty-one million, eight hundred seven thousand, two hundred eighty".