23540003 has 4 divisors (see below), whose sum is σ = 23984208. Its totient is φ = 23095800.

The previous prime is 23539991. The next prime is 23540009. The reversal of 23540003 is 30004532.

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 23540003 - 2⁴ = 23539987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23540009) 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, 222023 + ... + 222128.

It is an arithmetic number, because the mean of its divisors is an integer number (5996052).

Almost surely, 2^23540003 is an apocalyptic number.

23540003 is a deficient number, since it is larger than the sum of its proper divisors (444205).

23540003 is an equidigital number, since it uses as much as digits as its factorization.

23540003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444204.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 23540003 is about 4851.8040974466. The cubic root of 23540003 is about 286.5951508700.

Adding to 23540003 its reverse (30004532), we get a palindrome (53544535).

The spelling of 23540003 in words is "twenty-three million, five hundred forty thousand, three".