223221302231 has 2 divisors, whose sum is σ = 223221302232. Its totient is φ = 223221302230.

The previous prime is 223221302197. The next prime is 223221302243. The reversal of 223221302231 is 132203122322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223221302231 is a prime.

It is a super-3 number, since 3×223221302231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 223221302197 and 223221302206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223221302261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111610651115 + 111610651116.

It is an arithmetic number, because the mean of its divisors is an integer number (111610651116).

Almost surely, 2^223221302231 is an apocalyptic number.

223221302231 is a deficient number, since it is larger than the sum of its proper divisors (1).

223221302231 is an equidigital number, since it uses as much as digits as its factorization.

223221302231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 223221302231 its reverse (132203122322), we get a palindrome (355424424553).

The spelling of 223221302231 in words is "two hundred twenty-three billion, two hundred twenty-one million, three hundred two thousand, two hundred thirty-one".