23135529 has 4 divisors (see below), whose sum is σ = 30847376. Its totient is φ = 15423684.

The previous prime is 23135527. The next prime is 23135537. The reversal of 23135529 is 92553132.

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 23135529 - 2¹ = 23135527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23135496 and 23135505.

It is not an unprimeable number, because it can be changed into a prime (23135527) 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, 3855919 + ... + 3855924.

It is an arithmetic number, because the mean of its divisors is an integer number (7711844).

Almost surely, 2^23135529 is an apocalyptic number.

It is an amenable number.

23135529 is a deficient number, since it is larger than the sum of its proper divisors (7711847).

23135529 is an equidigital number, since it uses as much as digits as its factorization.

23135529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711846.

The product of its digits is 8100, while the sum is 30.

The square root of 23135529 is about 4809.9406441244. The cubic root of 23135529 is about 284.9441934437.

The spelling of 23135529 in words is "twenty-three million, one hundred thirty-five thousand, five hundred twenty-nine".