140231171 has 4 divisors (see below), whose sum is σ = 140296752. Its totient is φ = 140165592.

The previous prime is 140231107. The next prime is 140231173. The reversal of 140231171 is 171132041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171132041 = 157 ⋅1090013.

It is a cyclic number.

It is not a de Polignac number, because 140231171 - 2⁶ = 140231107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140231173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29471 + ... + 33896.

It is an arithmetic number, because the mean of its divisors is an integer number (35074188).

Almost surely, 2^140231171 is an apocalyptic number.

140231171 is a deficient number, since it is larger than the sum of its proper divisors (65581).

140231171 is an equidigital number, since it uses as much as digits as its factorization.

140231171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65580.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 140231171 is about 11841.9242946406. The cubic root of 140231171 is about 519.5350516080.

The spelling of 140231171 in words is "one hundred forty million, two hundred thirty-one thousand, one hundred seventy-one".