243220132 has 6 divisors (see below), whose sum is σ = 425635238. Its totient is φ = 121610064.

The previous prime is 243220099. The next prime is 243220189. The reversal of 243220132 is 231022342.

It can be written as a sum of positive squares in only one way, i.e., 133263936 + 109956196 = 11544^2 + 10486^2 .

It is a super-2 number, since 2×243220132² = 118312065220194848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30402513 + ... + 30402520.

Almost surely, 2^243220132 is an apocalyptic number.

It is an amenable number.

243220132 is a deficient number, since it is larger than the sum of its proper divisors (182415106).

243220132 is a wasteful number, since it uses less digits than its factorization.

243220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60805037 (or 60805035 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243220132 is about 15595.5164069677. The cubic root of 243220132 is about 624.2135233824.

Adding to 243220132 its reverse (231022342), we get a palindrome (474242474).

The spelling of 243220132 in words is "two hundred forty-three million, two hundred twenty thousand, one hundred thirty-two".