1223431033243 has 4 divisors (see below), whose sum is σ = 1223481883248. Its totient is φ = 1223380183240.

The previous prime is 1223431033241. The next prime is 1223431033271. The reversal of 1223431033243 is 3423301343221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223431033243 - 2¹ = 1223431033241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223431033241) 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 3 ways as a sum of consecutive naturals, for example, 25388896 + ... + 25437037.

It is an arithmetic number, because the mean of its divisors is an integer number (305870470812).

Almost surely, 2^{1223431033243} is an apocalyptic number.

1223431033243 is a deficient number, since it is larger than the sum of its proper divisors (50850005).

1223431033243 is an equidigital number, since it uses as much as digits as its factorization.

1223431033243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50850004.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 1223431033243 its reverse (3423301343221), we get a palindrome (4646732376464).

The spelling of 1223431033243 in words is "one trillion, two hundred twenty-three billion, four hundred thirty-one million, thirty-three thousand, two hundred forty-three".