23403403 has 4 divisors (see below), whose sum is σ = 23522400. Its totient is φ = 23284408.

The previous prime is 23403379. The next prime is 23403431. The reversal of 23403403 is 30430432.

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 23403403 - 2⁵ = 23403371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23403503) 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, 59203 + ... + 59596.

It is an arithmetic number, because the mean of its divisors is an integer number (5880600).

Almost surely, 2^23403403 is an apocalyptic number.

23403403 is a deficient number, since it is larger than the sum of its proper divisors (118997).

23403403 is a wasteful number, since it uses less digits than its factorization.

23403403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118996.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23403403 is about 4837.7063780267. The cubic root of 23403403 is about 286.0397152534.

Adding to 23403403 its reverse (30430432), we get a palindrome (53833835).

The spelling of 23403403 in words is "twenty-three million, four hundred three thousand, four hundred three".