243121001323 has 8 divisors (see below), whose sum is σ = 243397844768. Its totient is φ = 242844225984.

The previous prime is 243121001281. The next prime is 243121001351. The reversal of 243121001323 is 323100121342.

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

It is a cyclic number.

It is not a de Polignac number, because 243121001323 - 2²⁵ = 243087446891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243121001294 and 243121001303.

It is not an unprimeable number, because it can be changed into a prime (243121001423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11068690 + ... + 11090632.

It is an arithmetic number, because the mean of its divisors is an integer number (30424730596).

Almost surely, 2^243121001323 is an apocalyptic number.

243121001323 is a deficient number, since it is larger than the sum of its proper divisors (276843445).

243121001323 is a wasteful number, since it uses less digits than its factorization.

243121001323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34053.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 243121001323 its reverse (323100121342), we get a palindrome (566221122665).

The spelling of 243121001323 in words is "two hundred forty-three billion, one hundred twenty-one million, one thousand, three hundred twenty-three".