20310032512 has 128 divisors (see below), whose sum is σ = 50521236480. Its totient is φ = 7901107200.

The previous prime is 20310032473. The next prime is 20310032569. The reversal of 20310032512 is 21523001302.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 20310032512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9529687 + ... + 9531817.

It is an arithmetic number, because the mean of its divisors is an integer number (394697160).

Almost surely, 2^20310032512 is an apocalyptic number.

20310032512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310032512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25260618240).

20310032512 is an abundant number, since it is smaller than the sum of its proper divisors (30211203968).

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

20310032512 is a wasteful number, since it uses less digits than its factorization.

20310032512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20310032512 its reverse (21523001302), we get a palindrome (41833033814).

The spelling of 20310032512 in words is "twenty billion, three hundred ten million, thirty-two thousand, five hundred twelve".