243051221234 has 8 divisors (see below), whose sum is σ = 364578932460. Its totient is φ = 121524910416.

The previous prime is 243051221233. The next prime is 243051221239. The reversal of 243051221234 is 432122150342.

It can be written as a sum of positive squares in 2 ways, for example, as 208323780625 + 34727440609 = 456425^2 + 186353^2 .

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

It is a super-2 number, since 2×243051221234² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243051221197 and 243051221206.

It is not an unprimeable number, because it can be changed into a prime (243051221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444332 + ... + 826760.

Almost surely, 2^243051221234 is an apocalyptic number.

243051221234 is a deficient number, since it is larger than the sum of its proper divisors (121527711226).

243051221234 is a wasteful number, since it uses less digits than its factorization.

243051221234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700204.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 243051221234 its reverse (432122150342), we get a palindrome (675173371576).

The spelling of 243051221234 in words is "two hundred forty-three billion, fifty-one million, two hundred twenty-one thousand, two hundred thirty-four".