203011212 has 96 divisors (see below), whose sum is σ = 518192640. Its totient is φ = 61619200.

The previous prime is 203011199. The next prime is 203011279. The reversal of 203011212 is 212110302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215553 + ... + 1215719.

It is an arithmetic number, because the mean of its divisors is an integer number (5397840).

Almost surely, 2^203011212 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 203011212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259096320).

203011212 is an abundant number, since it is smaller than the sum of its proper divisors (315181428).

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

203011212 is a wasteful number, since it uses less digits than its factorization.

203011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 203011212 is about 14248.2003074072. The cubic root of 203011212 is about 587.7238858186.

Adding to 203011212 its reverse (212110302), we get a palindrome (415121514).

The spelling of 203011212 in words is "two hundred three million, eleven thousand, two hundred twelve".