20170005223 has 4 divisors (see below), whose sum is σ = 20185776640. Its totient is φ = 20154233808.

The previous prime is 20170005221. The next prime is 20170005239. The reversal of 20170005223 is 32250007102.

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

It is a cyclic number.

It is not a de Polignac number, because 20170005223 - 2¹ = 20170005221 is a prime.

It is a super-2 number, since 2×20170005223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20170005194 and 20170005203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20170005221) 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, 7883790 + ... + 7886347.

It is an arithmetic number, because the mean of its divisors is an integer number (5046444160).

Almost surely, 2^20170005223 is an apocalyptic number.

20170005223 is a deficient number, since it is larger than the sum of its proper divisors (15771417).

20170005223 is a wasteful number, since it uses less digits than its factorization.

20170005223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15771416.

The product of its (nonzero) digits is 840, while the sum is 22.

The spelling of 20170005223 in words is "twenty billion, one hundred seventy million, five thousand, two hundred twenty-three".