23151235 has 4 divisors (see below), whose sum is σ = 27781488. Its totient is φ = 18520984.

The previous prime is 23151197. The next prime is 23151239. The reversal of 23151235 is 53215132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23151235 - 2⁹ = 23150723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23151239) 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, 2315119 + ... + 2315128.

It is an arithmetic number, because the mean of its divisors is an integer number (6945372).

Almost surely, 2^23151235 is an apocalyptic number.

23151235 is a deficient number, since it is larger than the sum of its proper divisors (4630253).

23151235 is an equidigital number, since it uses as much as digits as its factorization.

23151235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630252.

The product of its digits is 900, while the sum is 22.

The square root of 23151235 is about 4811.5730276075. The cubic root of 23151235 is about 285.0086588115.

Adding to 23151235 its reverse (53215132), we get a palindrome (76366367).

The spelling of 23151235 in words is "twenty-three million, one hundred fifty-one thousand, two hundred thirty-five".