123613111 has 4 divisors (see below), whose sum is σ = 123732000. Its totient is φ = 123494224.

The previous prime is 123613097. The next prime is 123613121. The reversal of 123613111 is 111316321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111316321 = 9733 ⋅11437.

It is a cyclic number.

It is not a de Polignac number, because 123613111 - 2²⁵ = 90058679 is a prime.

It is a super-2 number, since 2×123613111² = 30560402422196642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123613121) 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, 57871 + ... + 59968.

It is an arithmetic number, because the mean of its divisors is an integer number (30933000).

Almost surely, 2^123613111 is an apocalyptic number.

123613111 is a deficient number, since it is larger than the sum of its proper divisors (118889).

123613111 is a wasteful number, since it uses less digits than its factorization.

123613111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118888.

The product of its digits is 108, while the sum is 19.

The square root of 123613111 is about 11118.1433252140. The cubic root of 123613111 is about 498.1439332244.

Adding to 123613111 its reverse (111316321), we get a palindrome (234929432).

The spelling of 123613111 in words is "one hundred twenty-three million, six hundred thirteen thousand, one hundred eleven".