201002681 has 8 divisors (see below), whose sum is σ = 228809664. Its totient is φ = 174784720.

The previous prime is 201002671. The next prime is 201002693. The reversal of 201002681 is 186200102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201002681 - 2¹⁸ = 200740537 is a prime.

It is a super-2 number, since 2×201002681² = 80804155538375522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201002651) 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, 396986 + ... + 397491.

It is an arithmetic number, because the mean of its divisors is an integer number (28601208).

Almost surely, 2^201002681 is an apocalyptic number.

It is an amenable number.

201002681 is a deficient number, since it is larger than the sum of its proper divisors (27806983).

201002681 is a wasteful number, since it uses less digits than its factorization.

201002681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794511.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 201002681 is about 14177.5414300223. The cubic root of 201002681 is about 585.7792046765.

Adding to 201002681 its reverse (186200102), we get a palindrome (387202783).

The spelling of 201002681 in words is "two hundred one million, two thousand, six hundred eighty-one".