1233220231 has 2 divisors, whose sum is σ = 1233220232. Its totient is φ = 1233220230.

The previous prime is 1233220211. The next prime is 1233220243. The reversal of 1233220231 is 1320223321.

It is a strong prime.

It is an emirp because it is prime and its reverse (1320223321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1233220231 - 2¹³ = 1233212039 is a prime.

It is a super-2 number, since 2×1233220231² = 3041664276295386722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1233220199 and 1233220208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233220211) 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, 616610115 + 616610116.

It is an arithmetic number, because the mean of its divisors is an integer number (616610116).

Almost surely, 2^1233220231 is an apocalyptic number.

1233220231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233220231 is an equidigital number, since it uses as much as digits as its factorization.

1233220231 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 1233220231 is about 35117.2355261629. The cubic root of 1233220231 is about 1072.3754923809.

Adding to 1233220231 its reverse (1320223321), we get a palindrome (2553443552).

The spelling of 1233220231 in words is "one billion, two hundred thirty-three million, two hundred twenty thousand, two hundred thirty-one".