144042331 has 2 divisors, whose sum is σ = 144042332. Its totient is φ = 144042330.

The previous prime is 144042329. The next prime is 144042341. The reversal of 144042331 is 133240441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144042331 - 2¹ = 144042329 is a prime.

It is a super-2 number, since 2×144042331² = 41496386239827122, which contains 22 as substring.

Together with 144042329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144042341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72021165 + 72021166.

It is an arithmetic number, because the mean of its divisors is an integer number (72021166).

Almost surely, 2^144042331 is an apocalyptic number.

144042331 is a deficient number, since it is larger than the sum of its proper divisors (1).

144042331 is an equidigital number, since it uses as much as digits as its factorization.

144042331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 144042331 is about 12001.7636620623. The cubic root of 144042331 is about 524.1996342747.

Adding to 144042331 its reverse (133240441), we get a palindrome (277282772).

The spelling of 144042331 in words is "one hundred forty-four million, forty-two thousand, three hundred thirty-one".