20103201312 has 96 divisors (see below), whose sum is σ = 53314075584. Its totient is φ = 6632371200.

The previous prime is 20103201311. The next prime is 20103201353. The reversal of 20103201312 is 21310230102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 20103201291 and 20103201300.

It is not an unprimeable number, because it can be changed into a prime (20103201311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5292598 + ... + 5296394.

It is an arithmetic number, because the mean of its divisors is an integer number (555354954).

Almost surely, 2^20103201312 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 20103201312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26657037792).

20103201312 is an abundant number, since it is smaller than the sum of its proper divisors (33210874272).

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

20103201312 is a wasteful number, since it uses less digits than its factorization.

20103201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362 (or 4354 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20103201312 its reverse (21310230102), we get a palindrome (41413431414).

The spelling of 20103201312 in words is "twenty billion, one hundred three million, two hundred one thousand, three hundred twelve".