20102030312 has 64 divisors (see below), whose sum is σ = 46632499200. Its totient is φ = 7910760960.

The previous prime is 20102030309. The next prime is 20102030317. The reversal of 20102030312 is 21303020102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20102030317) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 66764 + ... + 211332.

It is an arithmetic number, because the mean of its divisors is an integer number (728632800).

Almost surely, 2^20102030312 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 20102030312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23316249600).

20102030312 is an abundant number, since it is smaller than the sum of its proper divisors (26530468888).

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

20102030312 is a wasteful number, since it uses less digits than its factorization.

20102030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144786 (or 144782 counting only the distinct ones).

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

Adding to 20102030312 its reverse (21303020102), we get a palindrome (41405050414).

The spelling of 20102030312 in words is "twenty billion, one hundred two million, thirty thousand, three hundred twelve".