171601431 has 8 divisors (see below), whose sum is σ = 229013760. Its totient is φ = 114295032.

The previous prime is 171601427. The next prime is 171601453. The reversal of 171601431 is 134106171.

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

It is not a de Polignac number, because 171601431 - 2² = 171601427 is a prime.

It is a super-3 number, since 3×171601431³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171601231) 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, 22621 + ... + 29238.

It is an arithmetic number, because the mean of its divisors is an integer number (28626720).

Almost surely, 2^171601431 is an apocalyptic number.

171601431 is a deficient number, since it is larger than the sum of its proper divisors (57412329).

171601431 is a wasteful number, since it uses less digits than its factorization.

171601431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52965.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 171601431 is about 13099.6729348484. The cubic root of 171601431 is about 555.6998783548.

The spelling of 171601431 in words is "one hundred seventy-one million, six hundred one thousand, four hundred thirty-one".