213421123343 has 8 divisors (see below), whose sum is σ = 214283760768. Its totient is φ = 212558873944.

The previous prime is 213421123301. The next prime is 213421123351. The reversal of 213421123343 is 343321124312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213421123343 - 2²² = 213416929039 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 (213421123043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031696 + ... + 1221162.

It is an arithmetic number, because the mean of its divisors is an integer number (26785470096).

Almost surely, 2^213421123343 is an apocalyptic number.

213421123343 is a deficient number, since it is larger than the sum of its proper divisors (862637425).

213421123343 is a wasteful number, since it uses less digits than its factorization.

213421123343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194013.

The product of its digits is 10368, while the sum is 29.

Adding to 213421123343 its reverse (343321124312), we get a palindrome (556742247655).

The spelling of 213421123343 in words is "two hundred thirteen billion, four hundred twenty-one million, one hundred twenty-three thousand, three hundred forty-three".