123023311020 has 72 divisors (see below), whose sum is σ = 373219632240. Its totient is φ = 32801915520.

The previous prime is 123023311009. The next prime is 123023311039. The reversal of 123023311020 is 20113320321.

123023311020 is a `hidden beast` number, since 1 + 2 + 302 + 331 + 10 + 20 = 666.

123023311020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 123023310984 and 123023311002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1474830 + ... + 1556010.

Almost surely, 2^123023311020 is an apocalyptic number.

123023311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123023311020 is an abundant number, since it is smaller than the sum of its proper divisors (250196321220).

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

123023311020 is a wasteful number, since it uses less digits than its factorization.

123023311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89615 (or 89610 counting only the distinct ones).

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

Adding to 123023311020 its reverse (20113320321), we get a palindrome (143136631341).

The spelling of 123023311020 in words is "one hundred twenty-three billion, twenty-three million, three hundred eleven thousand, twenty".