123013111 has 8 divisors (see below), whose sum is σ = 133321664. Its totient is φ = 112825440.

The previous prime is 123013091. The next prime is 123013127. The reversal of 123013111 is 111310321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123013111 - 2¹³ = 123004919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123013091 and 123013100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28095 + ... + 32176.

It is an arithmetic number, because the mean of its divisors is an integer number (16665208).

Almost surely, 2^123013111 is an apocalyptic number.

123013111 is a deficient number, since it is larger than the sum of its proper divisors (10308553).

123013111 is a wasteful number, since it uses less digits than its factorization.

123013111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60441.

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

The square root of 123013111 is about 11091.1275801877. The cubic root of 123013111 is about 497.3366530221.

Adding to 123013111 its reverse (111310321), we get a palindrome (234323432).

It can be divided in two parts, 1230 and 13111, that added together give a palindrome (14341).

The spelling of 123013111 in words is "one hundred twenty-three million, thirteen thousand, one hundred eleven".