30311113220 has 48 divisors (see below), whose sum is σ = 67994177328. Its totient is φ = 11310243840.

The previous prime is 30311113219. The next prime is 30311113267. The reversal of 30311113220 is 2231111303.

It can be written as a sum of positive squares in 8 ways, for example, as 107453956 + 30203659264 = 10366^2 + 173792^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 356051 + ... + 432890.

It is an arithmetic number, because the mean of its divisors is an integer number (1416545361).

Almost surely, 2^30311113220 is an apocalyptic number.

It is an amenable number.

30311113220 is an abundant number, since it is smaller than the sum of its proper divisors (37683064108).

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

30311113220 is a wasteful number, since it uses less digits than its factorization.

30311113220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789080 (or 789078 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30311113220 its reverse (2231111303), we get a palindrome (32542224523).

The spelling of 30311113220 in words is "thirty billion, three hundred eleven million, one hundred thirteen thousand, two hundred twenty".