2103312 has 40 divisors (see below), whose sum is σ = 5624640. Its totient is φ = 676480.

The previous prime is 2103307. The next prime is 2103317. The reversal of 2103312 is 2133012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2103307) and next prime (2103317).

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

It is not an unprimeable number, because it can be changed into a prime (2103317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (140616).

2^2103312 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 2103312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2812320).

2103312 is an abundant number, since it is smaller than the sum of its proper divisors (3521328).

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

2103312 is a wasteful number, since it uses less digits than its factorization.

2103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2103312 is about 1450.2799729707. The cubic root of 2103312 is about 128.1252030138.

Adding to 2103312 its reverse (2133012), we get a palindrome (4236324).

It can be divided in two parts, 2103 and 312, that added together give a triangular number (2415 = T₆₉).

The spelling of 2103312 in words is "two million, one hundred three thousand, three hundred twelve".