123030322020 has 36 divisors (see below), whose sum is σ = 373191977340. Its totient is φ = 32808085824.

The previous prime is 123030322007. The next prime is 123030322031. The reversal of 123030322020 is 20223030321.

It is a happy number.

123030322020 is a `hidden beast` number, since 123 + 0 + 303 + 220 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38125686564 + 84904635456 = 195258^2 + 291384^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 123030321984 and 123030322002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341750715 + ... + 341751074.

It is an arithmetic number, because the mean of its divisors is an integer number (10366443815).

Almost surely, 2^123030322020 is an apocalyptic number.

123030322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123030322020 is an abundant number, since it is smaller than the sum of its proper divisors (250161655320).

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

123030322020 is a wasteful number, since it uses less digits than its factorization.

123030322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683501804 (or 683501799 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 123030322020 its reverse (20223030321), we get a palindrome (143253352341).

The spelling of 123030322020 in words is "one hundred twenty-three billion, thirty million, three hundred twenty-two thousand, twenty".