231341791 has 2 divisors, whose sum is σ = 231341792. Its totient is φ = 231341790.

The previous prime is 231341779. The next prime is 231341807. The reversal of 231341791 is 197143132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231341791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231341741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115670895 + 115670896.

It is an arithmetic number, because the mean of its divisors is an integer number (115670896).

Almost surely, 2^231341791 is an apocalyptic number.

231341791 is a deficient number, since it is larger than the sum of its proper divisors (1).

231341791 is an equidigital number, since it uses as much as digits as its factorization.

231341791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 231341791 is about 15209.9240958001. The cubic root of 231341791 is about 613.8817151284.

The spelling of 231341791 in words is "two hundred thirty-one million, three hundred forty-one thousand, seven hundred ninety-one".