231311244449 has 2 divisors, whose sum is σ = 231311244450. Its totient is φ = 231311244448.

The previous prime is 231311244389. The next prime is 231311244497. The reversal of 231311244449 is 944442113132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229003402849 + 2307841600 = 478543^2 + 48040^2 .

It is a cyclic number.

It is not a de Polignac number, because 231311244449 - 2²⁸ = 231042808993 is a prime.

It is not a weakly prime, because it can be changed into another prime (231311244499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655622224 + 115655622225.

It is an arithmetic number, because the mean of its divisors is an integer number (115655622225).

Almost surely, 2^231311244449 is an apocalyptic number.

It is an amenable number.

231311244449 is a deficient number, since it is larger than the sum of its proper divisors (1).

231311244449 is an equidigital number, since it uses as much as digits as its factorization.

231311244449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The spelling of 231311244449 in words is "two hundred thirty-one billion, three hundred eleven million, two hundred forty-four thousand, four hundred forty-nine".