243521106 has 8 divisors (see below), whose sum is σ = 487042224. Its totient is φ = 81173700.

The previous prime is 243521093. The next prime is 243521111. The reversal of 243521106 is 601125342.

243521106 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

243521106 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20293420 + ... + 20293431.

It is an arithmetic number, because the mean of its divisors is an integer number (60880278).

Almost surely, 2^243521106 is an apocalyptic number.

243521106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243521106 is a wasteful number, since it uses less digits than its factorization.

243521106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40586856.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 243521106 is about 15605.1627995353. The cubic root of 243521106 is about 624.4708959914.

Adding to 243521106 its reverse (601125342), we get a palindrome (844646448).

The spelling of 243521106 in words is "two hundred forty-three million, five hundred twenty-one thousand, one hundred six".