201317056 has 56 divisors (see below), whose sum is σ = 411992064. Its totient is φ = 97547520.

The previous prime is 201317047. The next prime is 201317057. The reversal of 201317056 is 650713102.

It is a self number, because there is not a number n which added to its sum of digits gives 201317056.

It is not an unprimeable number, because it can be changed into a prime (201317057) 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, 525441 + ... + 525823.

Almost surely, 2^201317056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201317056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205996032).

201317056 is an abundant number, since it is smaller than the sum of its proper divisors (210675008).

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

201317056 is a wasteful number, since it uses less digits than its factorization.

201317056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 201317056 is about 14188.6241757261. The cubic root of 201317056 is about 586.0844384376.

The spelling of 201317056 in words is "two hundred one million, three hundred seventeen thousand, fifty-six".