123131322030 has 64 divisors (see below), whose sum is σ = 305235836928. Its totient is φ = 31756250880.

The previous prime is 123131322001. The next prime is 123131322073. The reversal of 123131322030 is 30223131321.

It is a super-2 number, since 2×123131322030² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123131321988 and 123131322006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1501059 + ... + 1580961.

It is an arithmetic number, because the mean of its divisors is an integer number (4769309952).

Almost surely, 2^123131322030 is an apocalyptic number.

123131322030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123131322030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152617918464).

123131322030 is an abundant number, since it is smaller than the sum of its proper divisors (182104514898).

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

123131322030 is a wasteful number, since it uses less digits than its factorization.

123131322030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81601.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 123131322030 its reverse (30223131321), we get a palindrome (153354453351).

The spelling of 123131322030 in words is "one hundred twenty-three billion, one hundred thirty-one million, three hundred twenty-two thousand, thirty".