131256633 has 8 divisors (see below), whose sum is σ = 176184000. Its totient is φ = 86916848.

The previous prime is 131256623. The next prime is 131256637. The reversal of 131256633 is 336652131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131256633 - 2¹³ = 131248441 is a prime.

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 131256633.

It is not an unprimeable number, because it can be changed into a prime (131256637) 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, 146373 + ... + 147266.

It is an arithmetic number, because the mean of its divisors is an integer number (22023000).

Almost surely, 2^131256633 is an apocalyptic number.

It is an amenable number.

131256633 is a deficient number, since it is larger than the sum of its proper divisors (44927367).

131256633 is a wasteful number, since it uses less digits than its factorization.

131256633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293791.

The product of its digits is 9720, while the sum is 30.

The square root of 131256633 is about 11456.7287215854. The cubic root of 131256633 is about 508.2067392245.

The spelling of 131256633 in words is "one hundred thirty-one million, two hundred fifty-six thousand, six hundred thirty-three".