201321434356 has 12 divisors (see below), whose sum is σ = 402642868768. Its totient is φ = 86280614712.

The previous prime is 201321434351. The next prime is 201321434371. The reversal of 201321434356 is 653434123102.

It is a happy number.

201321434356 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321434351) 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, 3595025586 + ... + 3595025641.

Almost surely, 2^201321434356 is an apocalyptic number.

It is an amenable number.

201321434356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201321434356 is a wasteful number, since it uses less digits than its factorization.

201321434356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7190051238 (or 7190051236 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 201321434356 its reverse (653434123102), we get a palindrome (854755557458).

The spelling of 201321434356 in words is "two hundred one billion, three hundred twenty-one million, four hundred thirty-four thousand, three hundred fifty-six".