11030403123 has 8 divisors (see below), whose sum is σ = 16341338000. Its totient is φ = 7353602064.

The previous prime is 11030403121. The next prime is 11030403133. The reversal of 11030403123 is 32130403011.

11030403123 is a `hidden beast` number, since 110 + 30 + 403 + 123 = 666.

It is not a de Polignac number, because 11030403123 - 2¹ = 11030403121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11030403096 and 11030403105.

It is not an unprimeable number, because it can be changed into a prime (11030403121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204266698 + ... + 204266751.

It is an arithmetic number, because the mean of its divisors is an integer number (2042667250).

Almost surely, 2^11030403123 is an apocalyptic number.

11030403123 is a deficient number, since it is larger than the sum of its proper divisors (5310934877).

11030403123 is an equidigital number, since it uses as much as digits as its factorization.

11030403123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408533458 (or 408533452 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 11030403123 its reverse (32130403011), we get a palindrome (43160806134).

The spelling of 11030403123 in words is "eleven billion, thirty million, four hundred three thousand, one hundred twenty-three".