131250320 has 80 divisors (see below), whose sum is σ = 316908288. Its totient is φ = 50519040.

The previous prime is 131250299. The next prime is 131250331. The reversal of 131250320 is 23052131.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251660 + ... + 252180.

Almost surely, 2^131250320 is an apocalyptic number.

131250320 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 131250320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158454144).

131250320 is an abundant number, since it is smaller than the sum of its proper divisors (185657968).

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

131250320 is a wasteful number, since it uses less digits than its factorization.

131250320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131250320 is about 11456.4532033261. The cubic root of 131250320 is about 508.1985914189.

The spelling of 131250320 in words is "one hundred thirty-one million, two hundred fifty thousand, three hundred twenty".