231072871 has 2 divisors, whose sum is σ = 231072872. Its totient is φ = 231072870.

The previous prime is 231072869. The next prime is 231072929. The reversal of 231072871 is 178270132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231072871 - 2¹ = 231072869 is a prime.

Together with 231072869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231072271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115536435 + 115536436.

It is an arithmetic number, because the mean of its divisors is an integer number (115536436).

Almost surely, 2^231072871 is an apocalyptic number.

231072871 is a deficient number, since it is larger than the sum of its proper divisors (1).

231072871 is an equidigital number, since it uses as much as digits as its factorization.

231072871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 231072871 is about 15201.0812444378. The cubic root of 231072871 is about 613.6437568555.

The spelling of 231072871 in words is "two hundred thirty-one million, seventy-two thousand, eight hundred seventy-one".