201067971 has 16 divisors (see below), whose sum is σ = 289825536. Its totient is φ = 123257376.

The previous prime is 201067969. The next prime is 201067973. The reversal of 201067971 is 179760102.

It is an interprime number because it is at equal distance from previous prime (201067969) and next prime (201067973).

It is not a de Polignac number, because 201067971 - 2¹ = 201067969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201067973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456 + ... + 20058.

It is an arithmetic number, because the mean of its divisors is an integer number (18114096).

Almost surely, 2^201067971 is an apocalyptic number.

201067971 is a deficient number, since it is larger than the sum of its proper divisors (88757565).

201067971 is a wasteful number, since it uses less digits than its factorization.

201067971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19882.

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 201067971 is about 14179.8438284771. The cubic root of 201067971 is about 585.8426223779.

It can be divided in two parts, 20 and 1067971, that added together give a triangular number (1067991 = T₁₄₆₁).

The spelling of 201067971 in words is "two hundred one million, sixty-seven thousand, nine hundred seventy-one".