20323403 has 8 divisors (see below), whose sum is σ = 21100800. Its totient is φ = 19551168.

The previous prime is 20323379. The next prime is 20323423. The reversal of 20323403 is 30432302.

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

It is a cyclic number.

It is not a de Polignac number, because 20323403 - 2⁶ = 20323339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323423) 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, 7958 + ... + 10196.

It is an arithmetic number, because the mean of its divisors is an integer number (2637600).

Almost surely, 2^20323403 is an apocalyptic number.

20323403 is a deficient number, since it is larger than the sum of its proper divisors (777397).

20323403 is a wasteful number, since it uses less digits than its factorization.

20323403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20323403 is about 4508.1485113071. The cubic root of 20323403 is about 272.8970303168.

Adding to 20323403 its reverse (30432302), we get a palindrome (50755705).

The spelling of 20323403 in words is "twenty million, three hundred twenty-three thousand, four hundred three".