11003231123 has 2 divisors, whose sum is σ = 11003231124. Its totient is φ = 11003231122.

The previous prime is 11003231111. The next prime is 11003231207. The reversal of 11003231123 is 32113230011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11003231123 - 2⁸ = 11003230867 is a prime.

It is a super-2 number, since 2×11003231123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11003231023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501615561 + 5501615562.

It is an arithmetic number, because the mean of its divisors is an integer number (5501615562).

Almost surely, 2^11003231123 is an apocalyptic number.

11003231123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003231123 is an equidigital number, since it uses as much as digits as its factorization.

11003231123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11003231123 its reverse (32113230011), we get a palindrome (43116461134).

The spelling of 11003231123 in words is "eleven billion, three million, two hundred thirty-one thousand, one hundred twenty-three".