2103616 has 14 divisors (see below), whose sum is σ = 4174490. Its totient is φ = 1051776.

The previous prime is 2103613. The next prime is 2103617. The reversal of 2103616 is 6163012.

It can be written as a sum of positive squares in only one way, i.e., 1849600 + 254016 = 1360^2 + 504^2 .

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2103593 and 2103602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16371 + ... + 16498.

2^2103616 is an apocalyptic number.

It is an amenable number.

2103616 is a deficient number, since it is larger than the sum of its proper divisors (2070874).

2103616 is an equidigital number, since it uses as much as digits as its factorization.

2103616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32881 (or 32871 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2103616 is about 1450.3847765335. The cubic root of 2103616 is about 128.1313755305.

Adding to 2103616 its reverse (6163012), we get a palindrome (8266628).

The spelling of 2103616 in words is "two million, one hundred three thousand, six hundred sixteen".