23243403 has 32 divisors (see below), whose sum is σ = 35078400. Its totient is φ = 13650048.

The previous prime is 23243387. The next prime is 23243411. The reversal of 23243403 is 30434232.

It is not a de Polignac number, because 23243403 - 2⁴ = 23243387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23243403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23243443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280000 + ... + 280082.

It is an arithmetic number, because the mean of its divisors is an integer number (1096200).

Almost surely, 2^23243403 is an apocalyptic number.

23243403 is a deficient number, since it is larger than the sum of its proper divisors (11834997).

23243403 is an equidigital number, since it uses as much as digits as its factorization.

23243403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 23243403 is about 4821.1412549312. The cubic root of 23243403 is about 285.3863765347.

Adding to 23243403 its reverse (30434232), we get a palindrome (53677635).

The spelling of 23243403 in words is "twenty-three million, two hundred forty-three thousand, four hundred three".