1312223423 has 16 divisors (see below), whose sum is σ = 1516806720. Its totient is φ = 1111968000.

The previous prime is 1312223377. The next prime is 1312223447. The reversal of 1312223423 is 3243222131.

It is a cyclic number.

It is not a de Polignac number, because 1312223423 - 2⁶ = 1312223359 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 (1312223453) 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, 395873 + ... + 399173.

It is an arithmetic number, because the mean of its divisors is an integer number (94800420).

Almost surely, 2^1312223423 is an apocalyptic number.

1312223423 is a deficient number, since it is larger than the sum of its proper divisors (204583297).

1312223423 is a wasteful number, since it uses less digits than its factorization.

1312223423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938.

The product of its digits is 1728, while the sum is 23.

The square root of 1312223423 is about 36224.6245391170. The cubic root of 1312223423 is about 1094.8028732668.

Adding to 1312223423 its reverse (3243222131), we get a palindrome (4555445554).

The spelling of 1312223423 in words is "one billion, three hundred twelve million, two hundred twenty-three thousand, four hundred twenty-three".