203211123312 has 20 divisors (see below), whose sum is σ = 524962068680. Its totient is φ = 67737041088.

The previous prime is 203211123299. The next prime is 203211123371. The reversal of 203211123312 is 213321112302.

It is a super-3 number, since 3×203211123312³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116782487 + ... + 2116782582.

It is an arithmetic number, because the mean of its divisors is an integer number (26248103434).

Almost surely, 2^203211123312 is an apocalyptic number.

It is an amenable number.

203211123312 is an abundant number, since it is smaller than the sum of its proper divisors (321750945368).

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

203211123312 is a wasteful number, since it uses less digits than its factorization.

203211123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233565080 (or 4233565074 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 203211123312 its reverse (213321112302), we get a palindrome (416532235614).

The spelling of 203211123312 in words is "two hundred three billion, two hundred eleven million, one hundred twenty-three thousand, three hundred twelve".