23145603 has 16 divisors (see below), whose sum is σ = 33326496. Its totient is φ = 14204160.

The previous prime is 23145593. The next prime is 23145611. The reversal of 23145603 is 30654132.

It is a happy number.

It is not a de Polignac number, because 23145603 - 2⁴ = 23145587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23145203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20551 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (2082906).

Almost surely, 2^23145603 is an apocalyptic number.

23145603 is a deficient number, since it is larger than the sum of its proper divisors (10180893).

23145603 is a wasteful number, since it uses less digits than its factorization.

23145603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23145603 is about 4810.9877364217. The cubic root of 23145603 is about 284.9855455889.

Adding to 23145603 its reverse (30654132), we get a palindrome (53799735).

The spelling of 23145603 in words is "twenty-three million, one hundred forty-five thousand, six hundred three".