171440013 has 16 divisors (see below), whose sum is σ = 236650496. Its totient is φ = 110283120.

The previous prime is 171439997. The next prime is 171440051. The reversal of 171440013 is 310044171.

It is not a de Polignac number, because 171440013 - 2⁴ = 171439997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171440713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31620 + ... + 36642.

It is an arithmetic number, because the mean of its divisors is an integer number (14790656).

Almost surely, 2^171440013 is an apocalyptic number.

It is an amenable number.

171440013 is a deficient number, since it is larger than the sum of its proper divisors (65210483).

171440013 is a wasteful number, since it uses less digits than its factorization.

171440013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 171440013 is about 13093.5103390955. The cubic root of 171440013 is about 555.5255827933.

Adding to 171440013 its reverse (310044171), we get a palindrome (481484184).

The spelling of 171440013 in words is "one hundred seventy-one million, four hundred forty thousand, thirteen".