211400312 has 8 divisors (see below), whose sum is σ = 396375600. Its totient is φ = 105700152.

The previous prime is 211400311. The next prime is 211400317. The reversal of 211400312 is 213004112.

211400312 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211400311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13212512 + ... + 13212527.

It is an arithmetic number, because the mean of its divisors is an integer number (49546950).

Almost surely, 2^211400312 is an apocalyptic number.

It is an amenable number.

211400312 is a deficient number, since it is larger than the sum of its proper divisors (184975288).

211400312 is a wasteful number, since it uses less digits than its factorization.

211400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26425045 (or 26425041 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211400312 is about 14539.6118242545. The cubic root of 211400312 is about 595.7104354390.

Adding to 211400312 its reverse (213004112), we get a palindrome (424404424).

The spelling of 211400312 in words is "two hundred eleven million, four hundred thousand, three hundred twelve".