20131203212 has 24 divisors (see below), whose sum is σ = 36411067392. Its totient is φ = 9728845200.

The previous prime is 20131203179. The next prime is 20131203223. The reversal of 20131203212 is 21230213102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473 + ... + 200655.

It is an arithmetic number, because the mean of its divisors is an integer number (1517127808).

Almost surely, 2^20131203212 is an apocalyptic number.

It is an amenable number.

20131203212 is a deficient number, since it is larger than the sum of its proper divisors (16279864180).

20131203212 is a wasteful number, since it uses less digits than its factorization.

20131203212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201029 (or 201027 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20131203212 its reverse (21230213102), we get a palindrome (41361416314).

The spelling of 20131203212 in words is "twenty billion, one hundred thirty-one million, two hundred three thousand, two hundred twelve".