23321403 has 18 divisors (see below), whose sum is σ = 39187044. Its totient is φ = 13326264.

The previous prime is 23321377. The next prime is 23321413. The reversal of 23321403 is 30412332.

It is not a de Polignac number, because 23321403 - 2⁶ = 23321339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23321413) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26001 + ... + 26882.

It is an arithmetic number, because the mean of its divisors is an integer number (2177058).

Almost surely, 2^23321403 is an apocalyptic number.

23321403 is a deficient number, since it is larger than the sum of its proper divisors (15865641).

23321403 is a wasteful number, since it uses less digits than its factorization.

23321403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52903 (or 52893 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23321403 is about 4829.2238506824. The cubic root of 23321403 is about 285.7052524406.

Adding to 23321403 its reverse (30412332), we get a palindrome (53733735).

The spelling of 23321403 in words is "twenty-three million, three hundred twenty-one thousand, four hundred three".