11403424123 has 32 divisors (see below), whose sum is σ = 14795827200. Its totient is φ = 8534802816.

The previous prime is 11403424079. The next prime is 11403424133. The reversal of 11403424123 is 32142430411.

It is a cyclic number.

It is not a de Polignac number, because 11403424123 - 2⁹ = 11403423611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11403424133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1238565 + ... + 1247737.

It is an arithmetic number, because the mean of its divisors is an integer number (462369600).

Almost surely, 2^11403424123 is an apocalyptic number.

11403424123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11403424123 is a deficient number, since it is larger than the sum of its proper divisors (3392403077).

11403424123 is a wasteful number, since it uses less digits than its factorization.

11403424123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11403424123 its reverse (32142430411), we get a palindrome (43545854534).

The spelling of 11403424123 in words is "eleven billion, four hundred three million, four hundred twenty-four thousand, one hundred twenty-three".