201343356369 has 21 divisors (see below), whose sum is σ = 301895104633. Its totient is φ = 134220827412.

The previous prime is 201343356359. The next prime is 201343356373. The reversal of 201343356369 is 963653343102.

The square root of 201343356369 is 448713.

It is a perfect power (a square), and thus also a powerful number.

201343356369 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 4 + 3 + 3 + 5 + 636 + 9 = 666.

It is not a de Polignac number, because 201343356369 - 2¹⁹ = 201342832081 is a prime.

It is a super-2 number, since 2×201343356369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201343356359) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 12106942 + ... + 12123560.

Almost surely, 2^201343356369 is an apocalyptic number.

201343356369 is the 448713-rd square number.

201343356369 is the 224357-th centered octagonal number.

It is an amenable number.

201343356369 is a deficient number, since it is larger than the sum of its proper divisors (100551748264).

201343356369 is an frugal number, since it uses more digits than its factorization.

201343356369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33256 (or 16622 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 45.

The spelling of 201343356369 in words is "two hundred one billion, three hundred forty-three million, three hundred fifty-six thousand, three hundred sixty-nine".