123403211443 has 4 divisors (see below), whose sum is σ = 123404856520. Its totient is φ = 123401566368.

The previous prime is 123403211419. The next prime is 123403211489. The reversal of 123403211443 is 344112304321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123403211443 - 2⁵ = 123403211411 is a prime.

It is a super-2 number, since 2×123403211443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123403211143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704358 + ... + 861931.

It is an arithmetic number, because the mean of its divisors is an integer number (30851214130).

Almost surely, 2^123403211443 is an apocalyptic number.

123403211443 is a deficient number, since it is larger than the sum of its proper divisors (1645077).

123403211443 is an equidigital number, since it uses as much as digits as its factorization.

123403211443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645076.

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

Adding to 123403211443 its reverse (344112304321), we get a palindrome (467515515764).

The spelling of 123403211443 in words is "one hundred twenty-three billion, four hundred three million, two hundred eleven thousand, four hundred forty-three".