144217631 has 2 divisors, whose sum is σ = 144217632. Its totient is φ = 144217630.

The previous prime is 144217627. The next prime is 144217637. The reversal of 144217631 is 136712441.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (136712441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144217631 - 2² = 144217627 is a prime.

It is a super-2 number, since 2×144217631² = 41597450182504322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 144217594 and 144217603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144217637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72108815 + 72108816.

It is an arithmetic number, because the mean of its divisors is an integer number (72108816).

Almost surely, 2^144217631 is an apocalyptic number.

144217631 is a deficient number, since it is larger than the sum of its proper divisors (1).

144217631 is an equidigital number, since it uses as much as digits as its factorization.

144217631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 144217631 is about 12009.0645347587. The cubic root of 144217631 is about 524.4121989717.

The spelling of 144217631 in words is "one hundred forty-four million, two hundred seventeen thousand, six hundred thirty-one".