201343321331 has 4 divisors (see below), whose sum is σ = 203336819664. Its totient is φ = 199349823000.

The previous prime is 201343321237. The next prime is 201343321369. The reversal of 201343321331 is 133123343102.

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 201343321331 - 2²² = 201339127027 is a prime.

It is a super-2 number, since 2×201343321331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201343321331.

It is not an unprimeable number, because it can be changed into a prime (201343321831) 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, 996749015 + ... + 996749216.

It is an arithmetic number, because the mean of its divisors is an integer number (50834204916).

Almost surely, 2^201343321331 is an apocalyptic number.

201343321331 is a deficient number, since it is larger than the sum of its proper divisors (1993498333).

201343321331 is a wasteful number, since it uses less digits than its factorization.

201343321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993498332.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 201343321331 its reverse (133123343102), we get a palindrome (334466664433).

The spelling of 201343321331 in words is "two hundred one billion, three hundred forty-three million, three hundred twenty-one thousand, three hundred thirty-one".