23401403 has 4 divisors (see below), whose sum is σ = 23434320. Its totient is φ = 23368488.

The previous prime is 23401379. The next prime is 23401451. The reversal of 23401403 is 30410432.

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 23401403 - 2¹² = 23397307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23401453) 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, 15368 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (5858580).

Almost surely, 2^23401403 is an apocalyptic number.

23401403 is a deficient number, since it is larger than the sum of its proper divisors (32917).

23401403 is an equidigital number, since it uses as much as digits as its factorization.

23401403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32916.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23401403 is about 4837.4996640827. The cubic root of 23401403 is about 286.0315669266.

Adding to 23401403 its reverse (30410432), we get a palindrome (53811835).

The spelling of 23401403 in words is "twenty-three million, four hundred one thousand, four hundred three".