223242343242321 has 32 divisors (see below), whose sum is σ = 322601940283392. Its totient is φ = 136502262538560.

The previous prime is 223242343242263. The next prime is 223242343242389. The reversal of 223242343242321 is 123242343242322.

It is not a de Polignac number, because 223242343242321 - 2¹³ = 223242343234129 is a prime.

It is a super-3 number, since 3×223242343242321³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223242343242321.

It is not an unprimeable number, because it can be changed into a prime (223242343262321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20462656 + ... + 29414366.

It is an arithmetic number, because the mean of its divisors is an integer number (10081310633856).

Almost surely, 2^{223242343242321} is an apocalyptic number.

It is an amenable number.

223242343242321 is a deficient number, since it is larger than the sum of its proper divisors (99359597041071).

223242343242321 is a wasteful number, since it uses less digits than its factorization.

223242343242321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8955813.

The product of its digits is 663552, while the sum is 39.

Adding to 223242343242321 its reverse (123242343242322), we get a palindrome (346484686484643).

Subtracting from 223242343242321 its reverse (123242343242322), we obtain a palindrome (99999999999999).

The spelling of 223242343242321 in words is "two hundred twenty-three trillion, two hundred forty-two billion, three hundred forty-three million, two hundred forty-two thousand, three hundred twenty-one".