30312022031320 has 128 divisors (see below), whose sum is σ = 70334998272000. Its totient is φ = 11749695667200.

The previous prime is 30312022031299. The next prime is 30312022031471. The reversal of 30312022031320 is 2313022021303.

It is a junction number, because it is equal to n+sod(n) for n = 30312022031291 and 30312022031300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383118565 + ... + 383197675.

It is an arithmetic number, because the mean of its divisors is an integer number (549492174000).

Almost surely, 2^{30312022031320} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30312022031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35167499136000).

30312022031320 is an abundant number, since it is smaller than the sum of its proper divisors (40022976240680).

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

30312022031320 is a wasteful number, since it uses less digits than its factorization.

30312022031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80729 (or 80725 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 30312022031320 its reverse (2313022021303), we get a palindrome (32625044052623).

The spelling of 30312022031320 in words is "thirty trillion, three hundred twelve billion, twenty-two million, thirty-one thousand, three hundred twenty".