20320001312 has 24 divisors (see below), whose sum is σ = 43082311356. Its totient is φ = 9378461952.

The previous prime is 20320001311. The next prime is 20320001347. The reversal of 20320001312 is 21310002302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19545158416 + 774842896 = 139804^2 + 27836^2 .

It is not an unprimeable number, because it can be changed into a prime (20320001311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24422663 + ... + 24423494.

Almost surely, 2^20320001312 is an apocalyptic number.

It is an amenable number.

20320001312 is an abundant number, since it is smaller than the sum of its proper divisors (22762310044).

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

20320001312 is a wasteful number, since it uses less digits than its factorization.

20320001312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48846180 (or 48846172 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20320001312 its reverse (21310002302), we get a palindrome (41630003614).

The spelling of 20320001312 in words is "twenty billion, three hundred twenty million, one thousand, three hundred twelve".