131805933 has 24 divisors (see below), whose sum is σ = 207799200. Its totient is φ = 74077920.

The previous prime is 131805929. The next prime is 131805943. The reversal of 131805933 is 339508131.

It is not a de Polignac number, because 131805933 - 2² = 131805929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 131805894 and 131805903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131805923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1618 + ... + 16316.

It is an arithmetic number, because the mean of its divisors is an integer number (8658300).

Almost surely, 2^131805933 is an apocalyptic number.

It is an amenable number.

131805933 is a deficient number, since it is larger than the sum of its proper divisors (75993267).

131805933 is a wasteful number, since it uses less digits than its factorization.

131805933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14777 (or 14770 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 131805933 is about 11480.6765044574. The cubic root of 131805933 is about 508.9146893407.

The spelling of 131805933 in words is "one hundred thirty-one million, eight hundred five thousand, nine hundred thirty-three".