131870320 has 20 divisors (see below), whose sum is σ = 306598680. Its totient is φ = 52748096.

The previous prime is 131870303. The next prime is 131870329. The reversal of 131870320 is 23078131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131870329) 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, 824110 + ... + 824269.

It is an arithmetic number, because the mean of its divisors is an integer number (15329934).

Almost surely, 2^131870320 is an apocalyptic number.

131870320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131870320 is an abundant number, since it is smaller than the sum of its proper divisors (174728360).

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

131870320 is a wasteful number, since it uses less digits than its factorization.

131870320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648392 (or 1648386 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 131870320 is about 11483.4803086869. The cubic root of 131870320 is about 508.9975438708.

The spelling of 131870320 in words is "one hundred thirty-one million, eight hundred seventy thousand, three hundred twenty".