12320144623 has 2 divisors, whose sum is σ = 12320144624. Its totient is φ = 12320144622.

The previous prime is 12320144587. The next prime is 12320144687. The reversal of 12320144623 is 32644102321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12320144623 - 2¹³ = 12320136431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12320144591 and 12320144600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320144693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160072311 + 6160072312.

It is an arithmetic number, because the mean of its divisors is an integer number (6160072312).

Almost surely, 2^12320144623 is an apocalyptic number.

12320144623 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320144623 is an equidigital number, since it uses as much as digits as its factorization.

12320144623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 12320144623 its reverse (32644102321), we get a palindrome (44964246944).

The spelling of 12320144623 in words is "twelve billion, three hundred twenty million, one hundred forty-four thousand, six hundred twenty-three".