171201623 has 8 divisors (see below), whose sum is σ = 177191040. Its totient is φ = 165241440.

The previous prime is 171201617. The next prime is 171201629. The reversal of 171201623 is 326102171.

It is an interprime number because it is at equal distance from previous prime (171201617) and next prime (171201629).

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 171201623 - 2⁸ = 171201367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171201629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4961 + ... + 19157.

It is an arithmetic number, because the mean of its divisors is an integer number (22148880).

Almost surely, 2^171201623 is an apocalyptic number.

171201623 is a deficient number, since it is larger than the sum of its proper divisors (5989417).

171201623 is a wasteful number, since it uses less digits than its factorization.

171201623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14617.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 171201623 is about 13084.4038075871. The cubic root of 171201623 is about 555.2679743708.

Adding to 171201623 its reverse (326102171), we get a palindrome (497303794).

The spelling of 171201623 in words is "one hundred seventy-one million, two hundred one thousand, six hundred twenty-three".