144423431 has 2 divisors, whose sum is σ = 144423432. Its totient is φ = 144423430.

The previous prime is 144423421. The next prime is 144423457. The reversal of 144423431 is 134324441.

144423431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (144423457) can be obtained adding 144423431 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (134324441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144423431 - 2¹⁴ = 144407047 is a prime.

It is a super-2 number, since 2×144423431² = 41716254843623522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144423431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144423421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72211715 + 72211716.

It is an arithmetic number, because the mean of its divisors is an integer number (72211716).

Almost surely, 2^144423431 is an apocalyptic number.

144423431 is a deficient number, since it is larger than the sum of its proper divisors (1).

144423431 is an equidigital number, since it uses as much as digits as its factorization.

144423431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 26.

The square root of 144423431 is about 12017.6300076180. The cubic root of 144423431 is about 524.6615275599.

Adding to 144423431 its reverse (134324441), we get a palindrome (278747872).

The spelling of 144423431 in words is "one hundred forty-four million, four hundred twenty-three thousand, four hundred thirty-one".