30311022222 has 48 divisors (see below), whose sum is σ = 70741336848. Its totient is φ = 9324408960.

The previous prime is 30311022211. The next prime is 30311022223. The reversal of 30311022222 is 22222011303.

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 = 30311022195 and 30311022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30311022223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1308513 + ... + 1331475.

It is an arithmetic number, because the mean of its divisors is an integer number (1473777851).

Almost surely, 2^30311022222 is an apocalyptic number.

30311022222 is an abundant number, since it is smaller than the sum of its proper divisors (40430314626).

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

30311022222 is a wasteful number, since it uses less digits than its factorization.

30311022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28625 (or 28622 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30311022222 its reverse (22222011303), we get a palindrome (52533033525).

The spelling of 30311022222 in words is "thirty billion, three hundred eleven million, twenty-two thousand, two hundred twenty-two".