20304344312 has 64 divisors (see below), whose sum is σ = 44024048640. Its totient is φ = 8599248000.

The previous prime is 20304344303. The next prime is 20304344321. The reversal of 20304344312 is 21344340302.

It is an interprime number because it is at equal distance from previous prime (20304344303) and next prime (20304344321).

It is a super-3 number, since 3×20304344312³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3226433 + ... + 3232719.

It is an arithmetic number, because the mean of its divisors is an integer number (687875760).

Almost surely, 2^20304344312 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 20304344312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22012024320).

20304344312 is an abundant number, since it is smaller than the sum of its proper divisors (23719704328).

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

20304344312 is a wasteful number, since it uses less digits than its factorization.

20304344312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6972 (or 6968 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20304344312 its reverse (21344340302), we get a palindrome (41648684614).

The spelling of 20304344312 in words is "twenty billion, three hundred four million, three hundred forty-four thousand, three hundred twelve".