23443403 has 4 divisors (see below), whose sum is σ = 23579088. Its totient is φ = 23307720.

The previous prime is 23443373. The next prime is 23443411. The reversal of 23443403 is 30434432.

It is a happy number.

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 23443403 - 2¹⁰ = 23442379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23443603) 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, 67583 + ... + 67928.

It is an arithmetic number, because the mean of its divisors is an integer number (5894772).

Almost surely, 2^23443403 is an apocalyptic number.

23443403 is a deficient number, since it is larger than the sum of its proper divisors (135685).

23443403 is a wasteful number, since it uses less digits than its factorization.

23443403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135684.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 23443403 is about 4841.8388035952. The cubic root of 23443403 is about 286.2025843928.

Adding to 23443403 its reverse (30434432), we get a palindrome (53877835).

The spelling of 23443403 in words is "twenty-three million, four hundred forty-three thousand, four hundred three".