111311013123 has 12 divisors (see below), whose sum is σ = 161071239888. Its totient is φ = 74074111920.

The previous prime is 111311013061. The next prime is 111311013167. The reversal of 111311013123 is 321310113111.

It is not a de Polignac number, because 111311013123 - 2¹⁴ = 111310996739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111311013096 and 111311013105.

It is not an unprimeable number, because it can be changed into a prime (111311012123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11097223 + ... + 11107248.

It is an arithmetic number, because the mean of its divisors is an integer number (13422603324).

Almost surely, 2^111311013123 is an apocalyptic number.

111311013123 is a deficient number, since it is larger than the sum of its proper divisors (49760226765).

111311013123 is a wasteful number, since it uses less digits than its factorization.

111311013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22205034 (or 22205031 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111311013123 its reverse (321310113111), we get a palindrome (432621126234).

The spelling of 111311013123 in words is "one hundred eleven billion, three hundred eleven million, thirteen thousand, one hundred twenty-three".