171555540031 has 8 divisors (see below), whose sum is σ = 184427009280. Its totient is φ = 159068293848.

The previous prime is 171555540017. The next prime is 171555540041. The reversal of 171555540031 is 130045555171.

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

It is not a de Polignac number, because 171555540031 - 2²⁵ = 171521985599 is a prime.

It is a super-2 number, since 2×171555540031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171555540041) 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, 96054841 + ... + 96056626.

It is an arithmetic number, because the mean of its divisors is an integer number (23053376160).

Almost surely, 2^171555540031 is an apocalyptic number.

171555540031 is a deficient number, since it is larger than the sum of its proper divisors (12871469249).

171555540031 is a wasteful number, since it uses less digits than its factorization.

171555540031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192111533.

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 171555540031 in words is "one hundred seventy-one billion, five hundred fifty-five million, five hundred forty thousand, thirty-one".