131256501 has 8 divisors (see below), whose sum is σ = 179738784. Its totient is φ = 85139280.

The previous prime is 131256491. The next prime is 131256509. The reversal of 131256501 is 105652131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131256501 - 2⁷ = 131256373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131256509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591135 + ... + 591356.

It is an arithmetic number, because the mean of its divisors is an integer number (22467348).

Almost surely, 2^131256501 is an apocalyptic number.

It is an amenable number.

131256501 is a deficient number, since it is larger than the sum of its proper divisors (48482283).

131256501 is a wasteful number, since it uses less digits than its factorization.

131256501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182531.

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

The square root of 131256501 is about 11456.7229607772. The cubic root of 131256501 is about 508.2065688628.

The spelling of 131256501 in words is "one hundred thirty-one million, two hundred fifty-six thousand, five hundred one".