2164312 has 8 divisors (see below), whose sum is σ = 4058100. Its totient is φ = 1082152.

The previous prime is 2164307. The next prime is 2164313. The reversal of 2164312 is 2134612.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2164312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135262 + ... + 135277.

2^2164312 is an apocalyptic number.

It is an amenable number.

2164312 is a deficient number, since it is larger than the sum of its proper divisors (1893788).

2164312 is a wasteful number, since it uses less digits than its factorization.

2164312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270545 (or 270541 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 2164312 is about 1471.1600864624. The cubic root of 2164312 is about 129.3520420262.

Adding to 2164312 its reverse (2134612), we get a palindrome (4298924).

The spelling of 2164312 in words is "two million, one hundred sixty-four thousand, three hundred twelve".