171240131 has 2 divisors, whose sum is σ = 171240132. Its totient is φ = 171240130.

The previous prime is 171240073. The next prime is 171240161. The reversal of 171240131 is 131042171.

It is a happy number.

171240131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171240131 - 2¹⁸ = 170977987 is a prime.

It is a super-2 number, since 2×171240131² = 58646364929794322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171240161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85620065 + 85620066.

It is an arithmetic number, because the mean of its divisors is an integer number (85620066).

Almost surely, 2^171240131 is an apocalyptic number.

171240131 is a deficient number, since it is larger than the sum of its proper divisors (1).

171240131 is an equidigital number, since it uses as much as digits as its factorization.

171240131 is an evil number, because the sum of its binary digits is even.

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

The square root of 171240131 is about 13085.8752477624. The cubic root of 171240131 is about 555.3096029796.

The spelling of 171240131 in words is "one hundred seventy-one million, two hundred forty thousand, one hundred thirty-one".