213130123103 has 4 divisors (see below), whose sum is σ = 213134432928. Its totient is φ = 213125813280.

The previous prime is 213130123099. The next prime is 213130123123. The reversal of 213130123103 is 301321031312.

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 213130123103 - 2² = 213130123099 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 (213130123123) 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, 2079863 + ... + 2179928.

It is an arithmetic number, because the mean of its divisors is an integer number (53283608232).

Almost surely, 2^213130123103 is an apocalyptic number.

213130123103 is a deficient number, since it is larger than the sum of its proper divisors (4309825).

213130123103 is an equidigital number, since it uses as much as digits as its factorization.

213130123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309824.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213130123103 its reverse (301321031312), we get a palindrome (514451154415).

The spelling of 213130123103 in words is "two hundred thirteen billion, one hundred thirty million, one hundred twenty-three thousand, one hundred three".