30312222312 has 32 divisors (see below), whose sum is σ = 75786029280. Its totient is φ = 10103344320.

The previous prime is 30312222301. The next prime is 30312222359. The reversal of 30312222312 is 21322221303.

It is a happy number.

It is a super-2 number, since 2×30312222312² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371403 + ... + 445605.

It is an arithmetic number, because the mean of its divisors is an integer number (2368313415).

Almost surely, 2^30312222312 is an apocalyptic number.

It is an amenable number.

30312222312 is an abundant number, since it is smaller than the sum of its proper divisors (45473806968).

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

30312222312 is a wasteful number, since it uses less digits than its factorization.

30312222312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91233 (or 91229 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 30312222312 its reverse (21322221303), we get a palindrome (51634443615).

The spelling of 30312222312 in words is "thirty billion, three hundred twelve million, two hundred twenty-two thousand, three hundred twelve".