131298250 has 16 divisors (see below), whose sum is σ = 245790792. Its totient is φ = 52519200.

The previous prime is 131298247. The next prime is 131298263. The reversal of 131298250 is 52892131.

It can be written as a sum of positive squares in 4 ways, for example, as 50424201 + 80874049 = 7101^2 + 8993^2 .

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 7 ways as a sum of consecutive naturals, for example, 262347 + ... + 262846.

Almost surely, 2^131298250 is an apocalyptic number.

131298250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131298250 is a deficient number, since it is larger than the sum of its proper divisors (114492542).

131298250 is an equidigital number, since it uses as much as digits as its factorization.

131298250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525210 (or 525200 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 131298250 is about 11458.5448465327. The cubic root of 131298250 is about 508.2604452213.

The spelling of 131298250 in words is "one hundred thirty-one million, two hundred ninety-eight thousand, two hundred fifty".