123311301102 has 144 divisors (see below), whose sum is σ = 306891801216. Its totient is φ = 37079499600.

The previous prime is 123311301089. The next prime is 123311301103. The reversal of 123311301102 is 201103113321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311301103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7695583 + ... + 7711589.

It is an arithmetic number, because the mean of its divisors is an integer number (2131193064).

Almost surely, 2^123311301102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123311301102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153445900608).

123311301102 is an abundant number, since it is smaller than the sum of its proper divisors (183580500114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123311301102 is a wasteful number, since it uses less digits than its factorization.

123311301102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177 (or 16154 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 123311301102 its reverse (201103113321), we get a palindrome (324414414423).

The spelling of 123311301102 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred one thousand, one hundred two".