1223143423 has 8 divisors (see below), whose sum is σ = 1228445568. Its totient is φ = 1217852184.

The previous prime is 1223143417. The next prime is 1223143451. The reversal of 1223143423 is 3243413221.

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 1223143423 - 2¹³ = 1223135231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223143123) 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, 283440 + ... + 287722.

It is an arithmetic number, because the mean of its divisors is an integer number (153555696).

Almost surely, 2^1223143423 is an apocalyptic number.

1223143423 is a deficient number, since it is larger than the sum of its proper divisors (5302145).

1223143423 is an equidigital number, since it uses as much as digits as its factorization.

1223143423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453.

The product of its digits is 3456, while the sum is 25.

The square root of 1223143423 is about 34973.4674145987. The cubic root of 1223143423 is about 1069.4466591878.

Adding to 1223143423 its reverse (3243413221), we get a palindrome (4466556644).

The spelling of 1223143423 in words is "one billion, two hundred twenty-three million, one hundred forty-three thousand, four hundred twenty-three".