23091433 has 4 divisors (see below), whose sum is σ = 23407828. Its totient is φ = 22775040.

The previous prime is 23091413. The next prime is 23091451. The reversal of 23091433 is 33419032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19079424 + 4012009 = 4368^2 + 2003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23091433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23091398 and 23091407.

It is not an unprimeable number, because it can be changed into a prime (23091413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158088 + ... + 158233.

It is an arithmetic number, because the mean of its divisors is an integer number (5851957).

Almost surely, 2^23091433 is an apocalyptic number.

It is an amenable number.

23091433 is a deficient number, since it is larger than the sum of its proper divisors (316395).

23091433 is an equidigital number, since it uses as much as digits as its factorization.

23091433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316394.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23091433 is about 4805.3546175074. The cubic root of 23091433 is about 284.7630450685.

The spelling of 23091433 in words is "twenty-three million, ninety-one thousand, four hundred thirty-three".