20313002120 has 32 divisors (see below), whose sum is σ = 45708525720. Its totient is φ = 8124441600.

The previous prime is 20313002093. The next prime is 20313002141. The reversal of 20313002120 is 2120031302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17155236484 + 3157765636 = 130978^2 + 56194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20313002095 and 20313002104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636464 + ... + 667616.

Almost surely, 2^20313002120 is an apocalyptic number.

20313002120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313002120 is an abundant number, since it is smaller than the sum of its proper divisors (25395523600).

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

20313002120 is a wasteful number, since it uses less digits than its factorization.

20313002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47465 (or 47461 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20313002120 its reverse (2120031302), we get a palindrome (22433033422).

The spelling of 20313002120 in words is "twenty billion, three hundred thirteen million, two thousand, one hundred twenty".