1224556231 has 2 divisors, whose sum is σ = 1224556232. Its totient is φ = 1224556230.

The previous prime is 1224556217. The next prime is 1224556247. The reversal of 1224556231 is 1326554221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224556231 is a prime.

It is a super-2 number, since 2×1224556231² = 2999075925761850722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1224556193 and 1224556202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224556211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612278115 + 612278116.

It is an arithmetic number, because the mean of its divisors is an integer number (612278116).

Almost surely, 2^1224556231 is an apocalyptic number.

1224556231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224556231 is an equidigital number, since it uses as much as digits as its factorization.

1224556231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 1224556231 is about 34993.6598686105. The cubic root of 1224556231 is about 1069.8582602595.

The spelling of 1224556231 in words is "one billion, two hundred twenty-four million, five hundred fifty-six thousand, two hundred thirty-one".