213421343023 has 4 divisors (see below), whose sum is σ = 243910106320. Its totient is φ = 182932579728.

The previous prime is 213421343011. The next prime is 213421343063. The reversal of 213421343023 is 320343124312.

It is a happy number.

213421343023 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.

It is a cyclic number.

It is not a de Polignac number, because 213421343023 - 2¹³ = 213421334831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213421342982 and 213421343000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421343063) 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, 15244381638 + ... + 15244381651.

It is an arithmetic number, because the mean of its divisors is an integer number (60977526580).

Almost surely, 2^213421343023 is an apocalyptic number.

213421343023 is a deficient number, since it is larger than the sum of its proper divisors (30488763297).

213421343023 is an equidigital number, since it uses as much as digits as its factorization.

213421343023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30488763296.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 213421343023 its reverse (320343124312), we get a palindrome (533764467335).

The spelling of 213421343023 in words is "two hundred thirteen billion, four hundred twenty-one million, three hundred forty-three thousand, twenty-three".