22723133 has 4 divisors (see below), whose sum is σ = 22732668. Its totient is φ = 22713600.

The previous prime is 22723109. The next prime is 22723147. The reversal of 22723133 is 33132722.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8305924 + 14417209 = 2882^2 + 3797^2 .

It is a cyclic number.

It is not a de Polignac number, because 22723133 - 2²⁰ = 21674557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22723099 and 22723108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22723163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333 + ... + 7133.

It is an arithmetic number, because the mean of its divisors is an integer number (5683167).

Almost surely, 2^22723133 is an apocalyptic number.

It is an amenable number.

22723133 is a deficient number, since it is larger than the sum of its proper divisors (9535).

22723133 is an equidigital number, since it uses as much as digits as its factorization.

22723133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534.

The product of its digits is 1512, while the sum is 23.

The square root of 22723133 is about 4766.8787481957. The cubic root of 22723133 is about 283.2409681241.

Adding to 22723133 its reverse (33132722), we get a palindrome (55855855).

The spelling of 22723133 in words is "twenty-two million, seven hundred twenty-three thousand, one hundred thirty-three".