2103123133 has 4 divisors (see below), whose sum is σ = 2126753820. Its totient is φ = 2079492448.

The previous prime is 2103123119. The next prime is 2103123137. The reversal of 2103123133 is 3313213012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 750869604 + 1352253529 = 27402^2 + 36773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103123133 - 2⁹ = 2103122621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103123133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103123137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11815210 + ... + 11815387.

It is an arithmetic number, because the mean of its divisors is an integer number (531688455).

Almost surely, 2^2103123133 is an apocalyptic number.

It is an amenable number.

2103123133 is a deficient number, since it is larger than the sum of its proper divisors (23630687).

2103123133 is an equidigital number, since it uses as much as digits as its factorization.

2103123133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23630686.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2103123133 is about 45859.8204641056. The cubic root of 2103123133 is about 1281.2136789609.

Adding to 2103123133 its reverse (3313213012), we get a palindrome (5416336145).

The spelling of 2103123133 in words is "two billion, one hundred three million, one hundred twenty-three thousand, one hundred thirty-three".