220143323 has 4 divisors (see below), whose sum is σ = 222091608. Its totient is φ = 218195040.

The previous prime is 220143317. The next prime is 220143389. The reversal of 220143323 is 323341022.

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 220143323 - 2⁸ = 220143067 is a prime.

It is a super-2 number, since 2×220143323² = 96926165322964658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220143295 and 220143304.

It is not an unprimeable number, because it can be changed into a prime (220148323) 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, 973973 + ... + 974198.

It is an arithmetic number, because the mean of its divisors is an integer number (55522902).

Almost surely, 2^220143323 is an apocalyptic number.

220143323 is a deficient number, since it is larger than the sum of its proper divisors (1948285).

220143323 is a wasteful number, since it uses less digits than its factorization.

220143323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948284.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 220143323 is about 14837.2276049133. The cubic root of 220143323 is about 603.8121382262.

Adding to 220143323 its reverse (323341022), we get a palindrome (543484345).

The spelling of 220143323 in words is "two hundred twenty million, one hundred forty-three thousand, three hundred twenty-three".