211020312 has 16 divisors (see below), whose sum is σ = 527550840. Its totient is φ = 70340096.

The previous prime is 211020311. The next prime is 211020343. The reversal of 211020312 is 213020112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4396233 + ... + 4396280.

Almost surely, 2^211020312 is an apocalyptic number.

It is an amenable number.

211020312 is an abundant number, since it is smaller than the sum of its proper divisors (316530528).

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

211020312 is a wasteful number, since it uses less digits than its factorization.

211020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792522 (or 8792518 counting only the distinct ones).

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

The square root of 211020312 is about 14526.5381973821. The cubic root of 211020312 is about 595.3532840625.

Adding to 211020312 its reverse (213020112), we get a palindrome (424040424).

It can be divided in two parts, 2110 and 20312, that added together give a palindrome (22422).

The spelling of 211020312 in words is "two hundred eleven million, twenty thousand, three hundred twelve".