131317250 has 32 divisors (see below), whose sum is σ = 246750192. Its totient is φ = 52329600.

The previous prime is 131317247. The next prime is 131317259. The reversal of 131317250 is 52713131.

It can be written as a sum of positive squares in 8 ways, for example, as 4507129 + 126810121 = 2123^2 + 11261^2 .

It is not an unprimeable number, because it can be changed into a prime (131317259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78422 + ... + 80078.

Almost surely, 2^131317250 is an apocalyptic number.

131317250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131317250 is a deficient number, since it is larger than the sum of its proper divisors (115432942).

131317250 is a wasteful number, since it uses less digits than its factorization.

131317250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1981 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 131317250 is about 11459.3738921461. The cubic root of 131317250 is about 508.2849606095.

The spelling of 131317250 in words is "one hundred thirty-one million, three hundred seventeen thousand, two hundred fifty".