243351320546 has 8 divisors (see below), whose sum is σ = 365034031824. Its totient is φ = 121673309940.

The previous prime is 243351320539. The next prime is 243351320599. The reversal of 243351320546 is 645023153342.

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

It is a super-2 number, since 2×243351320546² (a number of 24 digits) contains 22 as substring.

It is a Curzon 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, 1042760 + ... + 1254611.

It is an arithmetic number, because the mean of its divisors is an integer number (45629253978).

Almost surely, 2^243351320546 is an apocalyptic number.

243351320546 is a deficient number, since it is larger than the sum of its proper divisors (121682711278).

243351320546 is a wasteful number, since it uses less digits than its factorization.

243351320546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350336.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 243351320546 its reverse (645023153342), we get a palindrome (888374473888).

The spelling of 243351320546 in words is "two hundred forty-three billion, three hundred fifty-one million, three hundred twenty thousand, five hundred forty-six".