1223306543 has 8 divisors (see below), whose sum is σ = 1310994528. Its totient is φ = 1138493664.

The previous prime is 1223306537. The next prime is 1223306551. The reversal of 1223306543 is 3456033221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223306543 is a prime.

It is a super-2 number, since 2×1223306543² = 2992957796293221698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223306503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717896 + ... + 719597.

It is an arithmetic number, because the mean of its divisors is an integer number (163874316).

Almost surely, 2^1223306543 is an apocalyptic number.

1223306543 is a deficient number, since it is larger than the sum of its proper divisors (87687985).

1223306543 is a wasteful number, since it uses less digits than its factorization.

1223306543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437553.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1223306543 is about 34975.7993904357. The cubic root of 1223306543 is about 1069.4941980077.

Adding to 1223306543 its reverse (3456033221), we get a palindrome (4679339764).

The spelling of 1223306543 in words is "one billion, two hundred twenty-three million, three hundred six thousand, five hundred forty-three".