201871017 has 12 divisors (see below), whose sum is σ = 292756464. Its totient is φ = 134043000.

The previous prime is 201870983. The next prime is 201871027. The reversal of 201871017 is 710178102.

It is not a de Polignac number, because 201871017 - 2⁸ = 201870761 is a prime.

It is a super-2 number, since 2×201871017² = 81503815009228578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201871027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42423 + ... + 46940.

It is an arithmetic number, because the mean of its divisors is an integer number (24396372).

Almost surely, 2^201871017 is an apocalyptic number.

It is an amenable number.

201871017 is a deficient number, since it is larger than the sum of its proper divisors (90885447).

201871017 is a wasteful number, since it uses less digits than its factorization.

201871017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89620 (or 89617 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 201871017 is about 14208.1320728659. The cubic root of 201871017 is about 586.6215192458.

The spelling of 201871017 in words is "two hundred one million, eight hundred seventy-one thousand, seventeen".