201066431 has 8 divisors (see below), whose sum is σ = 204608928. Its totient is φ = 197532000.

The previous prime is 201066427. The next prime is 201066449. The reversal of 201066431 is 134660102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 201066431 - 2² = 201066427 is a prime.

It is a super-2 number, since 2×201066431² = 80855419350155522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201066397 and 201066406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201066401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70646 + ... + 73436.

It is an arithmetic number, because the mean of its divisors is an integer number (25576116).

Almost surely, 2^201066431 is an apocalyptic number.

201066431 is a deficient number, since it is larger than the sum of its proper divisors (3542497).

201066431 is a wasteful number, since it uses less digits than its factorization.

201066431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 201066431 is about 14179.7895259415. The cubic root of 201066431 is about 585.8411266981.

The spelling of 201066431 in words is "two hundred one million, sixty-six thousand, four hundred thirty-one".