9171143231 has 8 divisors (see below), whose sum is σ = 9657396720. Its totient is φ = 8685245952.

The previous prime is 9171143213. The next prime is 9171143239. The reversal of 9171143231 is 1323411719.

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

It is not a de Polignac number, because 9171143231 - 2¹⁴ = 9171126847 is a prime.

It is a super-2 number, since 2×9171143231² (a number of 21 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 (9171143239) 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, 35360 + ... + 139973.

It is an arithmetic number, because the mean of its divisors is an integer number (1207174590).

Almost surely, 2^9171143231 is an apocalyptic number.

9171143231 is a deficient number, since it is larger than the sum of its proper divisors (486253489).

9171143231 is a wasteful number, since it uses less digits than its factorization.

9171143231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178105.

The product of its digits is 4536, while the sum is 32.

The square root of 9171143231 is about 95766.0860169194. The cubic root of 9171143231 is about 2093.1860193714.

The spelling of 9171143231 in words is "nine billion, one hundred seventy-one million, one hundred forty-three thousand, two hundred thirty-one".