23501133 has 6 divisors (see below), whose sum is σ = 33946094. Its totient is φ = 15667416.

The previous prime is 23501129. The next prime is 23501161. The reversal of 23501133 is 33110532.

It can be written as a sum of positive squares in only one way, i.e., 23444964 + 56169 = 4842^2 + 237^2 .

It is not a de Polignac number, because 23501133 - 2² = 23501129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23501033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1305610 + ... + 1305627.

Almost surely, 2^23501133 is an apocalyptic number.

It is an amenable number.

23501133 is a deficient number, since it is larger than the sum of its proper divisors (10444961).

23501133 is a wasteful number, since it uses less digits than its factorization.

23501133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611243 (or 2611240 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 23501133 is about 4847.7967160350. The cubic root of 23501133 is about 286.4373189630.

Adding to 23501133 its reverse (33110532), we get a palindrome (56611665).

The spelling of 23501133 in words is "twenty-three million, five hundred one thousand, one hundred thirty-three".