131589233 has 4 divisors (see below), whose sum is σ = 137310528. Its totient is φ = 125867940.

The previous prime is 131589217. The next prime is 131589239. The reversal of 131589233 is 332985131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131589233 - 2⁴ = 131589217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131589193 and 131589202.

It is not an unprimeable number, because it can be changed into a prime (131589239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2860613 + ... + 2860658.

It is an arithmetic number, because the mean of its divisors is an integer number (34327632).

Almost surely, 2^131589233 is an apocalyptic number.

It is an amenable number.

131589233 is a deficient number, since it is larger than the sum of its proper divisors (5721295).

131589233 is an equidigital number, since it uses as much as digits as its factorization.

131589233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721294.

The product of its digits is 19440, while the sum is 35.

The square root of 131589233 is about 11471.2350250529. The cubic root of 131589233 is about 508.6356368898.

The spelling of 131589233 in words is "one hundred thirty-one million, five hundred eighty-nine thousand, two hundred thirty-three".