123312102102 has 96 divisors (see below), whose sum is σ = 309665341440. Its totient is φ = 34736385600.

The previous prime is 123312102061. The next prime is 123312102119. The reversal of 123312102102 is 201201213321.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3021243 + ... + 3061785.

It is an arithmetic number, because the mean of its divisors is an integer number (3225680640).

Almost surely, 2^123312102102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123312102102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154832670720).

123312102102 is an abundant number, since it is smaller than the sum of its proper divisors (186353239338).

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

123312102102 is a wasteful number, since it uses less digits than its factorization.

123312102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40898 (or 40895 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 123312102102 its reverse (201201213321), we get a palindrome (324513315423).

The spelling of 123312102102 in words is "one hundred twenty-three billion, three hundred twelve million, one hundred two thousand, one hundred two".