213889336123 has 4 divisors (see below), whose sum is σ = 213890293648. Its totient is φ = 213888378600.

The previous prime is 213889336109. The next prime is 213889336159. The reversal of 213889336123 is 321633988312.

It is a happy number.

213889336123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213889336123 - 2¹⁷ = 213889205051 is a prime.

It is a super-2 number, since 2×213889336123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213889336163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53698 + ... + 656248.

It is an arithmetic number, because the mean of its divisors is an integer number (53472573412).

Almost surely, 2^213889336123 is an apocalyptic number.

213889336123 is a deficient number, since it is larger than the sum of its proper divisors (957525).

213889336123 is an equidigital number, since it uses as much as digits as its factorization.

213889336123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957524.

The product of its digits is 1119744, while the sum is 49.

The spelling of 213889336123 in words is "two hundred thirteen billion, eight hundred eighty-nine million, three hundred thirty-six thousand, one hundred twenty-three".