213111323003 has 4 divisors (see below), whose sum is σ = 213130411368. Its totient is φ = 213092234640.

The previous prime is 213111322993. The next prime is 213111323021. The reversal of 213111323003 is 300323111312.

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 213111323003 - 2⁴ = 213111322987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213111353003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9527426 + ... + 9549767.

It is an arithmetic number, because the mean of its divisors is an integer number (53282602842).

Almost surely, 2^213111323003 is an apocalyptic number.

213111323003 is a deficient number, since it is larger than the sum of its proper divisors (19088365).

213111323003 is a wasteful number, since it uses less digits than its factorization.

213111323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19088364.

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

Adding to 213111323003 its reverse (300323111312), we get a palindrome (513434434315).

The spelling of 213111323003 in words is "two hundred thirteen billion, one hundred eleven million, three hundred twenty-three thousand, three".