23213535 has 32 divisors (see below), whose sum is σ = 39951360. Its totient is φ = 11472768.

The previous prime is 23213527. The next prime is 23213539. The reversal of 23213535 is 53531232.

It is a happy number.

It is not a de Polignac number, because 23213535 - 2³ = 23213527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23213539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12529 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (1248480).

Almost surely, 2^23213535 is an apocalyptic number.

23213535 is a deficient number, since it is larger than the sum of its proper divisors (16737825).

23213535 is a wasteful number, since it uses less digits than its factorization.

23213535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807.

The product of its digits is 2700, while the sum is 24.

The square root of 23213535 is about 4818.0426523641. The cubic root of 23213535 is about 285.2640827092.

Adding to 23213535 its reverse (53531232), we get a palindrome (76744767).

The spelling of 23213535 in words is "twenty-three million, two hundred thirteen thousand, five hundred thirty-five".