20344323 has 16 divisors (see below), whose sum is σ = 27963936. Its totient is φ = 13148160.

The previous prime is 20344319. The next prime is 20344327. The reversal of 20344323 is 32344302.

It is an interprime number because it is at equal distance from previous prime (20344319) and next prime (20344327).

It is not a de Polignac number, because 20344323 - 2² = 20344319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20344323.

It is not an unprimeable number, because it can be changed into a prime (20344327) 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, 23311 + ... + 24167.

It is an arithmetic number, because the mean of its divisors is an integer number (1747746).

Almost surely, 2^20344323 is an apocalyptic number.

20344323 is a deficient number, since it is larger than the sum of its proper divisors (7619613).

20344323 is a wasteful number, since it uses less digits than its factorization.

20344323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 20344323 is about 4510.4681575198. The cubic root of 20344323 is about 272.9906341968.

Subtracting from 20344323 its sum of digits (21), we obtain a palindrome (20344302).

Adding to 20344323 its reverse (32344302), we get a palindrome (52688625).

The spelling of 20344323 in words is "twenty million, three hundred forty-four thousand, three hundred twenty-three".