2103251663 has 4 divisors (see below), whose sum is σ = 2106935688. Its totient is φ = 2099567640.

The previous prime is 2103251639. The next prime is 2103251671. The reversal of 2103251663 is 3661523012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2103251663 - 2¹² = 2103247567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103251693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1841156 + ... + 1842297.

It is an arithmetic number, because the mean of its divisors is an integer number (526733922).

Almost surely, 2^2103251663 is an apocalyptic number.

2103251663 is a deficient number, since it is larger than the sum of its proper divisors (3684025).

2103251663 is an equidigital number, since it uses as much as digits as its factorization.

2103251663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684024.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2103251663 is about 45861.2217783172. The cubic root of 2103251663 is about 1281.2397784059.

Adding to 2103251663 its reverse (3661523012), we get a palindrome (5764774675).

The spelling of 2103251663 in words is "two billion, one hundred three million, two hundred fifty-one thousand, six hundred sixty-three".