23133145 has 12 divisors (see below), whose sum is σ = 32292324. Its totient is φ = 15862560.

The previous prime is 23133139. The next prime is 23133151. The reversal of 23133145 is 54133132.

It is an interprime number because it is at equal distance from previous prime (23133139) and next prime (23133151).

It can be written as a sum of positive squares in 2 ways, for example, as 12446784 + 10686361 = 3528^2 + 3269^2 .

It is not a de Polignac number, because 23133145 - 2¹⁵ = 23100377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46966 + ... + 47455.

It is an arithmetic number, because the mean of its divisors is an integer number (2691027).

Almost surely, 2^23133145 is an apocalyptic number.

It is an amenable number.

23133145 is a deficient number, since it is larger than the sum of its proper divisors (9159179).

23133145 is an equidigital number, since it uses as much as digits as its factorization.

23133145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94440 (or 94433 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 23133145 is about 4809.6928176340. The cubic root of 23133145 is about 284.9344057517.

Adding to 23133145 its reverse (54133132), we get a palindrome (77266277).

The spelling of 23133145 in words is "twenty-three million, one hundred thirty-three thousand, one hundred forty-five".