220143023 has 4 divisors (see below), whose sum is σ = 220681680. Its totient is φ = 219604368.

The previous prime is 220142963. The next prime is 220143029. The reversal of 220143023 is 320341022.

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 220143023 - 2¹⁴ = 220126639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220142992 and 220143010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220143029) 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, 268715 + ... + 269532.

It is an arithmetic number, because the mean of its divisors is an integer number (55170420).

Almost surely, 2^220143023 is an apocalyptic number.

220143023 is a deficient number, since it is larger than the sum of its proper divisors (538657).

220143023 is an equidigital number, since it uses as much as digits as its factorization.

220143023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538656.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 220143023 is about 14837.2174952044. The cubic root of 220143023 is about 603.8118639447.

Adding to 220143023 its reverse (320341022), we get a palindrome (540484045).

The spelling of 220143023 in words is "two hundred twenty million, one hundred forty-three thousand, twenty-three".