1223320143 has 8 divisors (see below), whose sum is σ = 1635638400. Its totient is φ = 813274328.

The previous prime is 1223320141. The next prime is 1223320177. The reversal of 1223320143 is 3410233221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223320143 - 2¹ = 1223320141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223320141) 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, 566853 + ... + 569006.

It is an arithmetic number, because the mean of its divisors is an integer number (204454800).

Almost surely, 2^1223320143 is an apocalyptic number.

1223320143 is a deficient number, since it is larger than the sum of its proper divisors (412318257).

1223320143 is a wasteful number, since it uses less digits than its factorization.

1223320143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136221.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1223320143 is about 34975.9938100406. The cubic root of 1223320143 is about 1069.4981613280.

Adding to 1223320143 its reverse (3410233221), we get a palindrome (4633553364).

The spelling of 1223320143 in words is "one billion, two hundred twenty-three million, three hundred twenty thousand, one hundred forty-three".