20312310330 has 128 divisors (see below), whose sum is σ = 59689808640. Its totient is φ = 4883639040.

The previous prime is 20312310301. The next prime is 20312310341. The reversal of 20312310330 is 3301321302.

20312310330 is a `hidden beast` number, since 20 + 3 + 1 + 2 + 310 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83640 + ... + 218220.

It is an arithmetic number, because the mean of its divisors is an integer number (466326630).

Almost surely, 2^20312310330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20312310330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29844904320).

20312310330 is an abundant number, since it is smaller than the sum of its proper divisors (39377498310).

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

20312310330 is a wasteful number, since it uses less digits than its factorization.

20312310330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134653 (or 134647 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20312310330 its reverse (3301321302), we get a palindrome (23613631632).

The spelling of 20312310330 in words is "twenty billion, three hundred twelve million, three hundred ten thousand, three hundred thirty".