20310030220 has 48 divisors (see below), whose sum is σ = 45175415040. Its totient is φ = 7643510784.

The previous prime is 20310030187. The next prime is 20310030233. The reversal of 20310030220 is 2203001302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20310030220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191397 + ... + 1208323.

It is an arithmetic number, because the mean of its divisors is an integer number (941154480).

Almost surely, 2^20310030220 is an apocalyptic number.

20310030220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310030220 is an abundant number, since it is smaller than the sum of its proper divisors (24865384820).

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

20310030220 is a wasteful number, since it uses less digits than its factorization.

20310030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20482 (or 20480 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20310030220 its reverse (2203001302), we get a palindrome (22513031522).

The spelling of 20310030220 in words is "twenty billion, three hundred ten million, thirty thousand, two hundred twenty".