1223230231 has 2 divisors, whose sum is σ = 1223230232. Its totient is φ = 1223230230.

The previous prime is 1223230219. The next prime is 1223230259. The reversal of 1223230231 is 1320323221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223230231 is a prime.

It is a super-2 number, since 2×1223230231² = 2992584396064626722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1223230199 and 1223230208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223230031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611615115 + 611615116.

It is an arithmetic number, because the mean of its divisors is an integer number (611615116).

Almost surely, 2^1223230231 is an apocalyptic number.

1223230231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223230231 is an equidigital number, since it uses as much as digits as its factorization.

1223230231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1223230231 is about 34974.7084476769. The cubic root of 1223230231 is about 1069.4719585728.

Adding to 1223230231 its reverse (1320323221), we get a palindrome (2543553452).

The spelling of 1223230231 in words is "one billion, two hundred twenty-three million, two hundred thirty thousand, two hundred thirty-one".