231265211 has 2 divisors, whose sum is σ = 231265212. Its totient is φ = 231265210.

The previous prime is 231265201. The next prime is 231265261. The reversal of 231265211 is 112562132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231265211 - 2⁶ = 231265147 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (231265201) 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, 115632605 + 115632606.

It is an arithmetic number, because the mean of its divisors is an integer number (115632606).

Almost surely, 2^231265211 is an apocalyptic number.

231265211 is a deficient number, since it is larger than the sum of its proper divisors (1).

231265211 is an equidigital number, since it uses as much as digits as its factorization.

231265211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 231265211 is about 15207.4064521206. The cubic root of 231265211 is about 613.8139708473.

The spelling of 231265211 in words is "two hundred thirty-one million, two hundred sixty-five thousand, two hundred eleven".