20423033403 has 8 divisors (see below), whose sum is σ = 27297291600. Its totient is φ = 13582065408.

The previous prime is 20423033383. The next prime is 20423033467. The reversal of 20423033403 is 30433032402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20423033403 - 2¹³ = 20423025211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20423033803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8321118 + ... + 8323571.

It is an arithmetic number, because the mean of its divisors is an integer number (3412161450).

Almost surely, 2^20423033403 is an apocalyptic number.

20423033403 is a deficient number, since it is larger than the sum of its proper divisors (6874258197).

20423033403 is a wasteful number, since it uses less digits than its factorization.

20423033403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16645101.

The product of its (nonzero) digits is 5184, while the sum is 24.

Adding to 20423033403 its reverse (30433032402), we get a palindrome (50856065805).

The spelling of 20423033403 in words is "twenty billion, four hundred twenty-three million, thirty-three thousand, four hundred three".