11100031123 has 2 divisors, whose sum is σ = 11100031124. Its totient is φ = 11100031122.

The previous prime is 11100031087. The next prime is 11100031141. The reversal of 11100031123 is 32113000111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11100031123 - 2⁹ = 11100030611 is a prime.

It is a super-2 number, since 2×11100031123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11100041123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550015561 + 5550015562.

It is an arithmetic number, because the mean of its divisors is an integer number (5550015562).

Almost surely, 2^11100031123 is an apocalyptic number.

11100031123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100031123 is an equidigital number, since it uses as much as digits as its factorization.

11100031123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11100031123 its reverse (32113000111), we get a palindrome (43213031234).

The spelling of 11100031123 in words is "eleven billion, one hundred million, thirty-one thousand, one hundred twenty-three".