20030203312 has 80 divisors (see below), whose sum is σ = 44689600000. Its totient is φ = 8519385600.

The previous prime is 20030203307. The next prime is 20030203327. The reversal of 20030203312 is 21330203002.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 11120812 + ... + 11122612.

It is an arithmetic number, because the mean of its divisors is an integer number (558620000).

Almost surely, 2^20030203312 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 20030203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22344800000).

20030203312 is an abundant number, since it is smaller than the sum of its proper divisors (24659396688).

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

20030203312 is a wasteful number, since it uses less digits than its factorization.

20030203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20030203312 its reverse (21330203002), we get a palindrome (41360406314).

The spelling of 20030203312 in words is "twenty billion, thirty million, two hundred three thousand, three hundred twelve".