171331601 has 8 divisors (see below), whose sum is σ = 196506624. Its totient is φ = 146331360.

The previous prime is 171331561. The next prime is 171331631. The reversal of 171331601 is 106133171.

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

It is a de Polignac number, because none of the positive numbers 2^k-171331601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171331631) 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, 41585 + ... + 45518.

It is an arithmetic number, because the mean of its divisors is an integer number (24563328).

Almost surely, 2^171331601 is an apocalyptic number.

It is an amenable number.

171331601 is a deficient number, since it is larger than the sum of its proper divisors (25175023).

171331601 is an equidigital number, since it uses as much as digits as its factorization.

171331601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87391.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 171331601 is about 13089.3697709248. The cubic root of 171331601 is about 555.4084605073.

Adding to 171331601 its reverse (106133171), we get a palindrome (277464772).

The spelling of 171331601 in words is "one hundred seventy-one million, three hundred thirty-one thousand, six hundred one".