23113533 has 4 divisors (see below), whose sum is σ = 30818048. Its totient is φ = 15409020.

The previous prime is 23113529. The next prime is 23113543. The reversal of 23113533 is 33531132.

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 not a de Polignac number, because 23113533 - 2² = 23113529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23113513) 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, 3852253 + ... + 3852258.

It is an arithmetic number, because the mean of its divisors is an integer number (7704512).

Almost surely, 2^23113533 is an apocalyptic number.

It is an amenable number.

23113533 is a deficient number, since it is larger than the sum of its proper divisors (7704515).

23113533 is an equidigital number, since it uses as much as digits as its factorization.

23113533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7704514.

The product of its digits is 810, while the sum is 21.

The square root of 23113533 is about 4807.6535856902. The cubic root of 23113533 is about 284.8538616739.

Adding to 23113533 its reverse (33531132), we get a palindrome (56644665).

The spelling of 23113533 in words is "twenty-three million, one hundred thirteen thousand, five hundred thirty-three".