203023213212 has 12 divisors (see below), whose sum is σ = 473720830856. Its totient is φ = 67674404400.

The previous prime is 203023213199. The next prime is 203023213213. The reversal of 203023213212 is 212312320302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×203023213212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203023213213) 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, 8459300539 + ... + 8459300562.

Almost surely, 2^203023213212 is an apocalyptic number.

It is an amenable number.

203023213212 is an abundant number, since it is smaller than the sum of its proper divisors (270697617644).

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

203023213212 is a wasteful number, since it uses less digits than its factorization.

203023213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16918601108 (or 16918601106 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203023213212 its reverse (212312320302), we get a palindrome (415335533514).

The spelling of 203023213212 in words is "two hundred three billion, twenty-three million, two hundred thirteen thousand, two hundred twelve".