231444241034989 has 2 divisors, whose sum is σ = 231444241034990. Its totient is φ = 231444241034988.

The previous prime is 231444241034969. The next prime is 231444241035047. The reversal of 231444241034989 is 989430142444132.

It is an a-pointer prime, because the next prime (231444241035047) can be obtained adding 231444241034989 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149779854217764 + 81664386817225 = 12238458^2 + 9036835^2 .

It is a cyclic number.

It is not a de Polignac number, because 231444241034989 - 2⁵ = 231444241034957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231444241034969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115722120517494 + 115722120517495.

It is an arithmetic number, because the mean of its divisors is an integer number (115722120517495).

Almost surely, 2^{231444241034989} is an apocalyptic number.

It is an amenable number.

231444241034989 is a deficient number, since it is larger than the sum of its proper divisors (1).

231444241034989 is an equidigital number, since it uses as much as digits as its factorization.

231444241034989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23887872, while the sum is 58.

The spelling of 231444241034989 in words is "two hundred thirty-one trillion, four hundred forty-four billion, two hundred forty-one million, thirty-four thousand, nine hundred eighty-nine".