11320203123 has 6 divisors (see below), whose sum is σ = 16351404524. Its totient is φ = 7546802076.

The previous prime is 11320203121. The next prime is 11320203127. The reversal of 11320203123 is 32130202311.

11320203123 is a `hidden beast` number, since 11 + 320 + 20 + 312 + 3 = 666.

It is not a de Polignac number, because 11320203123 - 2¹ = 11320203121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11320203096 and 11320203105.

It is not an unprimeable number, because it can be changed into a prime (11320203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628900165 + ... + 628900182.

Almost surely, 2^11320203123 is an apocalyptic number.

11320203123 is a deficient number, since it is larger than the sum of its proper divisors (5031201401).

11320203123 is a wasteful number, since it uses less digits than its factorization.

11320203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257800353 (or 1257800350 counting only the distinct ones).

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

Adding to 11320203123 its reverse (32130202311), we get a palindrome (43450405434).

The spelling of 11320203123 in words is "eleven billion, three hundred twenty million, two hundred three thousand, one hundred twenty-three".