2123312103 has 32 divisors (see below), whose sum is σ = 3435294720. Its totient is φ = 1285476480.

The previous prime is 2123312099. The next prime is 2123312167. The reversal of 2123312103 is 3012133212.

It is not a de Polignac number, because 2123312103 - 2² = 2123312099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123312003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319551 + ... + 326127.

It is an arithmetic number, because the mean of its divisors is an integer number (107352960).

Almost surely, 2^2123312103 is an apocalyptic number.

2123312103 is a deficient number, since it is larger than the sum of its proper divisors (1311982617).

2123312103 is a wasteful number, since it uses less digits than its factorization.

2123312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7684 (or 7678 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2123312103 is about 46079.4108360773. The cubic root of 2123312103 is about 1285.3003084193.

Adding to 2123312103 its reverse (3012133212), we get a palindrome (5135445315).

The spelling of 2123312103 in words is "two billion, one hundred twenty-three million, three hundred twelve thousand, one hundred three".