2103123013251 has 32 divisors (see below), whose sum is σ = 3025501258752. Its totient is φ = 1291816874880.

The previous prime is 2103123013241. The next prime is 2103123013289. The reversal of 2103123013251 is 1523103213012.

It is a happy number.

It is not a de Polignac number, because 2103123013251 - 2¹³ = 2103123005059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2103123013241) 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, 107605386 + ... + 107624928.

It is an arithmetic number, because the mean of its divisors is an integer number (94546914336).

Almost surely, 2^{2103123013251} is an apocalyptic number.

2103123013251 is a deficient number, since it is larger than the sum of its proper divisors (922378245501).

2103123013251 is a wasteful number, since it uses less digits than its factorization.

2103123013251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24563.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 2103123013251 its reverse (1523103213012), we get a palindrome (3626226226263).

The spelling of 2103123013251 in words is "two trillion, one hundred three billion, one hundred twenty-three million, thirteen thousand, two hundred fifty-one".