30113312220 has 96 divisors (see below), whose sum is σ = 94095355200. Its totient is φ = 7995117312.

The previous prime is 30113312213. The next prime is 30113312221. The reversal of 30113312220 is 2221331103.

30113312220 is a `hidden beast` number, since 301 + 133 + 12 + 220 = 666.

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 = 30113312193 and 30113312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30113312221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1902 + ... + 245418.

It is an arithmetic number, because the mean of its divisors is an integer number (980159950).

Almost surely, 2^30113312220 is an apocalyptic number.

30113312220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30113312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47047677600).

30113312220 is an abundant number, since it is smaller than the sum of its proper divisors (63982042980).

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

30113312220 is a wasteful number, since it uses less digits than its factorization.

30113312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243764 (or 243756 counting only the distinct ones).

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

Adding to 30113312220 its reverse (2221331103), we get a palindrome (32334643323).

The spelling of 30113312220 in words is "thirty billion, one hundred thirteen million, three hundred twelve thousand, two hundred twenty".