243221034 has 32 divisors (see below), whose sum is σ = 556577280. Its totient is φ = 69411312.

The previous prime is 243221003. The next prime is 243221039. The reversal of 243221034 is 430122342.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 243221034.

It is not an unprimeable number, because it can be changed into a prime (243221039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39957 + ... + 45639.

It is an arithmetic number, because the mean of its divisors is an integer number (17393040).

Almost surely, 2^243221034 is an apocalyptic number.

243221034 is an abundant number, since it is smaller than the sum of its proper divisors (313356246).

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

243221034 is a wasteful number, since it uses less digits than its factorization.

243221034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6714.

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

The square root of 243221034 is about 15595.5453255088. The cubic root of 243221034 is about 624.2142950289.

Adding to 243221034 its reverse (430122342), we get a palindrome (673343376).

The spelling of 243221034 in words is "two hundred forty-three million, two hundred twenty-one thousand, thirty-four".