231208711 has 2 divisors, whose sum is σ = 231208712. Its totient is φ = 231208710.

The previous prime is 231208709. The next prime is 231208723. The reversal of 231208711 is 117802132.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231208711 - 2¹ = 231208709 is a prime.

Together with 231208709, 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 (231208741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115604355 + 115604356.

It is an arithmetic number, because the mean of its divisors is an integer number (115604356).

Almost surely, 2^231208711 is an apocalyptic number.

231208711 is a deficient number, since it is larger than the sum of its proper divisors (1).

231208711 is an equidigital number, since it uses as much as digits as its factorization.

231208711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 231208711 is about 15205.5486911851. The cubic root of 231208711 is about 613.7639801694.

The spelling of 231208711 in words is "two hundred thirty-one million, two hundred eight thousand, seven hundred eleven".