243113332 has 72 divisors (see below), whose sum is σ = 542549952. Its totient is φ = 92601600.

The previous prime is 243113327. The next prime is 243113389. The reversal of 243113332 is 233311342.

It is a super-2 number, since 2×243113332² = 118208184392284448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865032 + ... + 865312.

It is an arithmetic number, because the mean of its divisors is an integer number (7535416).

Almost surely, 2^243113332 is an apocalyptic number.

243113332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243113332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271274976).

243113332 is an abundant number, since it is smaller than the sum of its proper divisors (299436620).

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

243113332 is a wasteful number, since it uses less digits than its factorization.

243113332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 354 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 243113332 is about 15592.0919699699. The cubic root of 243113332 is about 624.1221442080.

Adding to 243113332 its reverse (233311342), we get a palindrome (476424674).

The spelling of 243113332 in words is "two hundred forty-three million, one hundred thirteen thousand, three hundred thirty-two".