243534056 has 8 divisors (see below), whose sum is σ = 456626370. Its totient is φ = 121767024.

The previous prime is 243534043. The next prime is 243534073. The reversal of 243534056 is 650435342.

It can be written as a sum of positive squares in only one way, i.e., 241180900 + 2353156 = 15530^2 + 1534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×243534056³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15220871 + ... + 15220886.

Almost surely, 2^243534056 is an apocalyptic number.

It is an amenable number.

243534056 is a deficient number, since it is larger than the sum of its proper divisors (213092314).

243534056 is a wasteful number, since it uses less digits than its factorization.

243534056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30441763 (or 30441759 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 243534056 is about 15605.5777208023. The cubic root of 243534056 is about 624.4819651959.

Adding to 243534056 its reverse (650435342), we get a palindrome (893969398).

The spelling of 243534056 in words is "two hundred forty-three million, five hundred thirty-four thousand, fifty-six".