11123280903 has 128 divisors (see below), whose sum is σ = 19010682880. Its totient is φ = 5643509760.

The previous prime is 11123280901. The next prime is 11123280913. The reversal of 11123280903 is 30908232111.

It is not a de Polignac number, because 11123280903 - 2¹ = 11123280901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123280901) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 87584826 + ... + 87584952.

It is an arithmetic number, because the mean of its divisors is an integer number (148520960).

Almost surely, 2^11123280903 is an apocalyptic number.

11123280903 is a deficient number, since it is larger than the sum of its proper divisors (7887401977).

11123280903 is a wasteful number, since it uses less digits than its factorization.

11123280903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 11123280903 in words is "eleven billion, one hundred twenty-three million, two hundred eighty thousand, nine hundred three".