1224206431 has 16 divisors (see below), whose sum is σ = 1515849984. Its totient is φ = 964623744.

The previous prime is 1224206419. The next prime is 1224206437. The reversal of 1224206431 is 1346024221.

It is a happy number.

It is not a de Polignac number, because 1224206431 - 2⁹ = 1224205919 is a prime.

It is a super-2 number, since 2×1224206431² = 2997362771403515522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224206396 and 1224206405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224206437) 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 in 15 ways as a sum of consecutive naturals, for example, 114505 + ... + 124738.

It is an arithmetic number, because the mean of its divisors is an integer number (94740624).

Almost surely, 2^1224206431 is an apocalyptic number.

1224206431 is a deficient number, since it is larger than the sum of its proper divisors (291643553).

1224206431 is a wasteful number, since it uses less digits than its factorization.

1224206431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239310.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1224206431 is about 34988.6614633941. The cubic root of 1224206431 is about 1069.7563806154.

The spelling of 1224206431 in words is "one billion, two hundred twenty-four million, two hundred six thousand, four hundred thirty-one".