23020403 has 16 divisors (see below), whose sum is σ = 27432960. Its totient is φ = 18900000.

The previous prime is 23020357. The next prime is 23020411. The reversal of 23020403 is 30402032.

It is not a de Polignac number, because 23020403 - 2⁶ = 23020339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23020433) 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, 30278 + ... + 31028.

It is an arithmetic number, because the mean of its divisors is an integer number (1714560).

Almost surely, 2^23020403 is an apocalyptic number.

23020403 is a deficient number, since it is larger than the sum of its proper divisors (4412557).

23020403 is a wasteful number, since it uses less digits than its factorization.

23020403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 23020403 is about 4797.9582115729. The cubic root of 23020403 is about 284.4707650419.

Adding to 23020403 its reverse (30402032), we get a palindrome (53422435).

The spelling of 23020403 in words is "twenty-three million, twenty thousand, four hundred three".