123312401443 has 16 divisors (see below), whose sum is σ = 155232769536. Its totient is φ = 95154690240.

The previous prime is 123312401419. The next prime is 123312401449. The reversal of 123312401443 is 344104213321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123312401443 - 2²¹ = 123310304291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123312401449) 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 in 15 ways as a sum of consecutive naturals, for example, 7766146 + ... + 7782007.

It is an arithmetic number, because the mean of its divisors is an integer number (9702048096).

Almost surely, 2^123312401443 is an apocalyptic number.

123312401443 is a deficient number, since it is larger than the sum of its proper divisors (31920368093).

123312401443 is a wasteful number, since it uses less digits than its factorization.

123312401443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15548274.

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

Adding to 123312401443 its reverse (344104213321), we get a palindrome (467416614764).

The spelling of 123312401443 in words is "one hundred twenty-three billion, three hundred twelve million, four hundred one thousand, four hundred forty-three".