131516250 has 80 divisors (see below), whose sum is σ = 348188544. Its totient is φ = 32992000.

The previous prime is 131516249. The next prime is 131516261. The reversal of 131516250 is 52615131.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131516250.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 62719 + ... + 64781.

Almost surely, 2^131516250 is an apocalyptic number.

131516250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131516250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174094272).

131516250 is an abundant number, since it is smaller than the sum of its proper divisors (216672294).

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

131516250 is a wasteful number, since it uses less digits than its factorization.

131516250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105 (or 2090 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 131516250 is about 11468.0534529623. The cubic root of 131516250 is about 508.5415850719.

The spelling of 131516250 in words is "one hundred thirty-one million, five hundred sixteen thousand, two hundred fifty".