123030113111 has 4 divisors (see below), whose sum is σ = 123844882224. Its totient is φ = 122215344000.

The previous prime is 123030113099. The next prime is 123030113131. The reversal of 123030113111 is 111311030321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111311030321 = 107 ⋅1040290003.

It is a cyclic number.

It is not a de Polignac number, because 123030113111 - 2¹⁸ = 123029850967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123030113111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123030113131) 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 3 ways as a sum of consecutive naturals, for example, 407384330 + ... + 407384631.

It is an arithmetic number, because the mean of its divisors is an integer number (30961220556).

Almost surely, 2^123030113111 is an apocalyptic number.

123030113111 is a deficient number, since it is larger than the sum of its proper divisors (814769113).

123030113111 is an equidigital number, since it uses as much as digits as its factorization.

123030113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814769112.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 123030113111 its reverse (111311030321), we get a palindrome (234341143432).

The spelling of 123030113111 in words is "one hundred twenty-three billion, thirty million, one hundred thirteen thousand, one hundred eleven".