131908780 has 24 divisors (see below), whose sum is σ = 293303808. Its totient is φ = 49659648.

The previous prime is 131908771. The next prime is 131908781. The reversal of 131908780 is 87809131.

It is not an unprimeable number, because it can be changed into a prime (131908781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193644 + ... + 194323.

It is an arithmetic number, because the mean of its divisors is an integer number (12220992).

Almost surely, 2^131908780 is an apocalyptic number.

131908780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131908780 is an abundant number, since it is smaller than the sum of its proper divisors (161395028).

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

131908780 is a wasteful number, since it uses less digits than its factorization.

131908780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387993 (or 387991 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 131908780 is about 11485.1547660447. The cubic root of 131908780 is about 509.0470221328.

The spelling of 131908780 in words is "one hundred thirty-one million, nine hundred eight thousand, seven hundred eighty".