220143234 has 64 divisors (see below), whose sum is σ = 507772800. Its totient is φ = 63157248.

The previous prime is 220143233. The next prime is 220143247. The reversal of 220143234 is 432341022.

220143234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×220143234³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220143234.

It is not an unprimeable number, because it can be changed into a prime (220143233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54244 + ... + 58160.

It is an arithmetic number, because the mean of its divisors is an integer number (7933950).

Almost surely, 2^220143234 is an apocalyptic number.

220143234 is an abundant number, since it is smaller than the sum of its proper divisors (287629566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220143234 is a wasteful number, since it uses less digits than its factorization.

220143234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 220143234 is about 14837.2246057004. The cubic root of 220143234 is about 603.8120568561.

Adding to 220143234 its reverse (432341022), we get a palindrome (652484256).

The spelling of 220143234 in words is "two hundred twenty million, one hundred forty-three thousand, two hundred thirty-four".