223304310643 has 4 divisors (see below), whose sum is σ = 229339562320. Its totient is φ = 217269058968.

The previous prime is 223304310563. The next prime is 223304310703. The reversal of 223304310643 is 346013403322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223304310643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223304310743) 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, 3017625783 + ... + 3017625856.

It is an arithmetic number, because the mean of its divisors is an integer number (57334890580).

Almost surely, 2^223304310643 is an apocalyptic number.

223304310643 is a deficient number, since it is larger than the sum of its proper divisors (6035251677).

223304310643 is an equidigital number, since it uses as much as digits as its factorization.

223304310643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6035251676.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 223304310643 its reverse (346013403322), we get a palindrome (569317713965).

The spelling of 223304310643 in words is "two hundred twenty-three billion, three hundred four million, three hundred ten thousand, six hundred forty-three".