144305131991 has 2 divisors, whose sum is σ = 144305131992. Its totient is φ = 144305131990.

The previous prime is 144305131969. The next prime is 144305132021. The reversal of 144305131991 is 199131503441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144305131991 - 2³⁰ = 143231390167 is a prime.

It is a super-2 number, since 2×144305131991² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144305131591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72152565995 + 72152565996.

It is an arithmetic number, because the mean of its divisors is an integer number (72152565996).

Almost surely, 2^144305131991 is an apocalyptic number.

144305131991 is a deficient number, since it is larger than the sum of its proper divisors (1).

144305131991 is an equidigital number, since it uses as much as digits as its factorization.

144305131991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 144305131991 in words is "one hundred forty-four billion, three hundred five million, one hundred thirty-one thousand, nine hundred ninety-one".