231132271 has 2 divisors, whose sum is σ = 231132272. Its totient is φ = 231132270.

The previous prime is 231132269. The next prime is 231132277. The reversal of 231132271 is 172231132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231132271 - 2¹ = 231132269 is a prime.

Together with 231132269, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231132277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115566135 + 115566136.

It is an arithmetic number, because the mean of its divisors is an integer number (115566136).

Almost surely, 2^231132271 is an apocalyptic number.

231132271 is a deficient number, since it is larger than the sum of its proper divisors (1).

231132271 is an equidigital number, since it uses as much as digits as its factorization.

231132271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 231132271 is about 15203.0349272769. The cubic root of 231132271 is about 613.6963337996.

The spelling of 231132271 in words is "two hundred thirty-one million, one hundred thirty-two thousand, two hundred seventy-one".