231244251971 has 2 divisors, whose sum is σ = 231244251972. Its totient is φ = 231244251970.

The previous prime is 231244251913. The next prime is 231244252027. The reversal of 231244251971 is 179152442132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231244251971 - 2¹⁰ = 231244250947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (231244251071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115622125985 + 115622125986.

It is an arithmetic number, because the mean of its divisors is an integer number (115622125986).

Almost surely, 2^231244251971 is an apocalyptic number.

231244251971 is a deficient number, since it is larger than the sum of its proper divisors (1).

231244251971 is an equidigital number, since it uses as much as digits as its factorization.

231244251971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The spelling of 231244251971 in words is "two hundred thirty-one billion, two hundred forty-four million, two hundred fifty-one thousand, nine hundred seventy-one".