20323113120 has 72 divisors (see below), whose sum is σ = 69352628436. Its totient is φ = 5419496448.

The previous prime is 20323113119. The next prime is 20323113143. The reversal of 20323113120 is 2131132302.

20323113120 is a `hidden beast` number, since 20 + 323 + 11 + 312 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17105500944 + 3217612176 = 130788^2 + 56724^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×20323113120² (a number of 21 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 = 20323113093 and 20323113102.

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, 7055197 + ... + 7058076.

Almost surely, 2^20323113120 is an apocalyptic number.

20323113120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323113120 is an abundant number, since it is smaller than the sum of its proper divisors (49029515316).

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

20323113120 is a wasteful number, since it uses less digits than its factorization.

20323113120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14113294 (or 14113283 counting only the distinct ones).

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

Adding to 20323113120 its reverse (2131132302), we get a palindrome (22454245422).

The spelling of 20323113120 in words is "twenty billion, three hundred twenty-three million, one hundred thirteen thousand, one hundred twenty".