123102031320 has 384 divisors, whose sum is σ = 448451640000. Its totient is φ = 29103390720.

The previous prime is 123102031309. The next prime is 123102031369. The reversal of 123102031320 is 23130201321.

123102031320 is a `hidden beast` number, since 1 + 2 + 310 + 2 + 0 + 31 + 320 = 666.

It is a super-2 number, since 2×123102031320² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 123102031293 and 123102031302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21043756 + ... + 21049604.

Almost surely, 2^123102031320 is an apocalyptic number.

123102031320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123102031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224225820000).

123102031320 is an abundant number, since it is smaller than the sum of its proper divisors (325349608680).

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

123102031320 is a wasteful number, since it uses less digits than its factorization.

123102031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083 (or 6076 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 123102031320 its reverse (23130201321), we get a palindrome (146232232641).

The spelling of 123102031320 in words is "one hundred twenty-three billion, one hundred two million, thirty-one thousand, three hundred twenty".