343536143221 has 8 divisors (see below), whose sum is σ = 350976904704. Its totient is φ = 336100860240.

The previous prime is 343536143213. The next prime is 343536143239. The reversal of 343536143221 is 122341635343.

It is a happy number.

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 343536143221 - 2³ = 343536143213 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 (343536143921) 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, 1242730 + ... + 1493803.

It is an arithmetic number, because the mean of its divisors is an integer number (43872113088).

Almost surely, 2^343536143221 is an apocalyptic number.

It is an amenable number.

343536143221 is a deficient number, since it is larger than the sum of its proper divisors (7440761483).

343536143221 is a wasteful number, since it uses less digits than its factorization.

343536143221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739251.

The product of its digits is 155520, while the sum is 37.

Adding to 343536143221 its reverse (122341635343), we get a palindrome (465877778564).

The spelling of 343536143221 in words is "three hundred forty-three billion, five hundred thirty-six million, one hundred forty-three thousand, two hundred twenty-one".