20023223 has 4 divisors (see below), whose sum is σ = 21843528. Its totient is φ = 18202920.

The previous prime is 20023187. The next prime is 20023259. The reversal of 20023223 is 32232002.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20023187) and next prime (20023259).

It is a cyclic number.

It is not a de Polignac number, because 20023223 - 2¹⁰ = 20022199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023198 and 20023207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910136 + ... + 910157.

It is an arithmetic number, because the mean of its divisors is an integer number (5460882).

Almost surely, 2^20023223 is an apocalyptic number.

20023223 is a deficient number, since it is larger than the sum of its proper divisors (1820305).

20023223 is a wasteful number, since it uses less digits than its factorization.

20023223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820304.

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

The square root of 20023223 is about 4474.7316120635. The cubic root of 20023223 is about 271.5467825555.

Adding to 20023223 its reverse (32232002), we get a palindrome (52255225).

It can be divided in two parts, 2002 and 3223, that added together give a palindrome (5225).

The spelling of 20023223 in words is "twenty million, twenty-three thousand, two hundred twenty-three".