131250305 has 16 divisors (see below), whose sum is σ = 164747520. Its totient is φ = 100191168.

The previous prime is 131250299. The next prime is 131250331. The reversal of 131250305 is 503052131.

It is a cyclic number.

It is not a de Polignac number, because 131250305 - 2⁴ = 131250289 is a prime.

It is a Curzon number.

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, 56711 + ... + 58979.

It is an arithmetic number, because the mean of its divisors is an integer number (10296720).

Almost surely, 2^131250305 is an apocalyptic number.

It is an amenable number.

131250305 is a deficient number, since it is larger than the sum of its proper divisors (33497215).

131250305 is a wasteful number, since it uses less digits than its factorization.

131250305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 131250305 is about 11456.4525486732. The cubic root of 131250305 is about 508.1985720590.

The spelling of 131250305 in words is "one hundred thirty-one million, two hundred fifty thousand, three hundred five".