123111320323102 has 4 divisors (see below), whose sum is σ = 184666980484656. Its totient is φ = 61555660161550.

The previous prime is 123111320323037. The next prime is 123111320323109. The reversal of 123111320323102 is 201323023111321.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111320323109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30777830080774 + ... + 30777830080777.

It is an arithmetic number, because the mean of its divisors is an integer number (46166745121164).

Almost surely, 2^{123111320323102} is an apocalyptic number.

123111320323102 is a deficient number, since it is larger than the sum of its proper divisors (61555660161554).

123111320323102 is an equidigital number, since it uses as much as digits as its factorization.

123111320323102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61555660161553.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 123111320323102 its reverse (201323023111321), we get a palindrome (324434343434423).

The spelling of 123111320323102 in words is "one hundred twenty-three trillion, one hundred eleven billion, three hundred twenty million, three hundred twenty-three thousand, one hundred two".