211203312 has 20 divisors (see below), whose sum is σ = 545608680. Its totient is φ = 70401088.

The previous prime is 211203299. The next prime is 211203313. The reversal of 211203312 is 213302112.

211203312 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×211203312³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211203291 and 211203300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211203313) 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, 2199987 + ... + 2200082.

It is an arithmetic number, because the mean of its divisors is an integer number (27280434).

Almost surely, 2^211203312 is an apocalyptic number.

It is an amenable number.

211203312 is an abundant number, since it is smaller than the sum of its proper divisors (334405368).

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

211203312 is a wasteful number, since it uses less digits than its factorization.

211203312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400080 (or 4400074 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 211203312 is about 14532.8356489709. The cubic root of 211203312 is about 595.5253341223.

Adding to 211203312 its reverse (213302112), we get a palindrome (424505424).

The spelling of 211203312 in words is "two hundred eleven million, two hundred three thousand, three hundred twelve".