123443412403 has 4 divisors (see below), whose sum is σ = 124716025000. Its totient is φ = 122170799808.

The previous prime is 123443412373. The next prime is 123443412431. The reversal of 123443412403 is 304214344321.

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 123443412403 - 2¹³ = 123443404211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123443412473) 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, 636306153 + ... + 636306346.

It is an arithmetic number, because the mean of its divisors is an integer number (31179006250).

Almost surely, 2^123443412403 is an apocalyptic number.

123443412403 is a deficient number, since it is larger than the sum of its proper divisors (1272612597).

123443412403 is an equidigital number, since it uses as much as digits as its factorization.

123443412403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272612596.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 123443412403 its reverse (304214344321), we get a palindrome (427657756724).

The spelling of 123443412403 in words is "one hundred twenty-three billion, four hundred forty-three million, four hundred twelve thousand, four hundred three".