213111303123223 has 4 divisors (see below), whose sum is σ = 213112280606760. Its totient is φ = 213110325639688.

The previous prime is 213111303123211. The next prime is 213111303123241. The reversal of 213111303123223 is 322321303111312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213111303123223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213111303123191 and 213111303123200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213111303123253) 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, 488414665 + ... + 488850802.

It is an arithmetic number, because the mean of its divisors is an integer number (53278070151690).

Almost surely, 2^{213111303123223} is an apocalyptic number.

213111303123223 is a deficient number, since it is larger than the sum of its proper divisors (977483537).

213111303123223 is an equidigital number, since it uses as much as digits as its factorization.

213111303123223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977483536.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 213111303123223 its reverse (322321303111312), we get a palindrome (535432606234535).

The spelling of 213111303123223 in words is "two hundred thirteen trillion, one hundred eleven billion, three hundred three million, one hundred twenty-three thousand, two hundred twenty-three".