30031323220 has 24 divisors (see below), whose sum is σ = 64255701384. Its totient is φ = 11785877376.

The previous prime is 30031323209. The next prime is 30031323227. The reversal of 30031323220 is 2232313003.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 143137296 + 29888185924 = 11964^2 + 172882^2 .

It is a super-2 number, since 2×30031323220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031323227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14164659 + ... + 14166778.

It is an arithmetic number, because the mean of its divisors is an integer number (2677320891).

Almost surely, 2^30031323220 is an apocalyptic number.

It is an amenable number.

30031323220 is an abundant number, since it is smaller than the sum of its proper divisors (34224378164).

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

30031323220 is a wasteful number, since it uses less digits than its factorization.

30031323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28331499 (or 28331497 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 30031323220 its reverse (2232313003), we get a palindrome (32263636223).

The spelling of 30031323220 in words is "thirty billion, thirty-one million, three hundred twenty-three thousand, two hundred twenty".