23012403 has 4 divisors (see below), whose sum is σ = 30683208. Its totient is φ = 15341600.

The previous prime is 23012393. The next prime is 23012411. The reversal of 23012403 is 30421032.

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 23012403 - 2⁴ = 23012387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23012453) 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 3 ways as a sum of consecutive naturals, for example, 3835398 + ... + 3835403.

It is an arithmetic number, because the mean of its divisors is an integer number (7670802).

Almost surely, 2^23012403 is an apocalyptic number.

23012403 is a deficient number, since it is larger than the sum of its proper divisors (7670805).

23012403 is an equidigital number, since it uses as much as digits as its factorization.

23012403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7670804.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23012403 is about 4797.1244511686. The cubic root of 23012403 is about 284.4378083383.

Adding to 23012403 its reverse (30421032), we get a palindrome (53433435).

The spelling of 23012403 in words is "twenty-three million, twelve thousand, four hundred three".