231885271 has 2 divisors, whose sum is σ = 231885272. Its totient is φ = 231885270.

The previous prime is 231885257. The next prime is 231885293. The reversal of 231885271 is 172588132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231885271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231885271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231882271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115942635 + 115942636.

It is an arithmetic number, because the mean of its divisors is an integer number (115942636).

Almost surely, 2^231885271 is an apocalyptic number.

231885271 is a deficient number, since it is larger than the sum of its proper divisors (1).

231885271 is an equidigital number, since it uses as much as digits as its factorization.

231885271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 37.

The square root of 231885271 is about 15227.7795820665. The cubic root of 231885271 is about 614.3620599772.

The spelling of 231885271 in words is "two hundred thirty-one million, eight hundred eighty-five thousand, two hundred seventy-one".