131645433 has 32 divisors (see below), whose sum is σ = 197683200. Its totient is φ = 77435136.

The previous prime is 131645429. The next prime is 131645441. The reversal of 131645433 is 334546131.

It is not a de Polignac number, because 131645433 - 2² = 131645429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131645433.

It is not an unprimeable number, because it can be changed into a prime (131645443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99148 + ... + 100466.

It is an arithmetic number, because the mean of its divisors is an integer number (6177600).

Almost surely, 2^131645433 is an apocalyptic number.

It is an amenable number.

131645433 is a deficient number, since it is larger than the sum of its proper divisors (66037767).

131645433 is a wasteful number, since it uses less digits than its factorization.

131645433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461.

The product of its digits is 12960, while the sum is 30.

The square root of 131645433 is about 11473.6843690246. The cubic root of 131645433 is about 508.7080370744.

The spelling of 131645433 in words is "one hundred thirty-one million, six hundred forty-five thousand, four hundred thirty-three".