20232403 has 4 divisors (see below), whose sum is σ = 20702968. Its totient is φ = 19761840.

The previous prime is 20232391. The next prime is 20232409. The reversal of 20232403 is 30423202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30423202 = 2 ⋅15211601.

It is a cyclic number.

It is not a de Polignac number, because 20232403 - 2⁵ = 20232371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20232409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235218 + ... + 235303.

It is an arithmetic number, because the mean of its divisors is an integer number (5175742).

Almost surely, 2^20232403 is an apocalyptic number.

20232403 is a deficient number, since it is larger than the sum of its proper divisors (470565).

20232403 is an equidigital number, since it uses as much as digits as its factorization.

20232403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470564.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20232403 is about 4498.0443528271. The cubic root of 20232403 is about 272.4891132760.

Adding to 20232403 its reverse (30423202), we get a palindrome (50655605).

The spelling of 20232403 in words is "twenty million, two hundred thirty-two thousand, four hundred three".