144443531 has 2 divisors, whose sum is σ = 144443532. Its totient is φ = 144443530.

The previous prime is 144443527. The next prime is 144443561. The reversal of 144443531 is 135344441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144443531 - 2² = 144443527 is a prime.

It is a super-2 number, since 2×144443531² = 41727867295495922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144443494 and 144443503.

It is not a weakly prime, because it can be changed into another prime (144443501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72221765 + 72221766.

It is an arithmetic number, because the mean of its divisors is an integer number (72221766).

Almost surely, 2^144443531 is an apocalyptic number.

144443531 is a deficient number, since it is larger than the sum of its proper divisors (1).

144443531 is an equidigital number, since it uses as much as digits as its factorization.

144443531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 144443531 is about 12018.4662499006. The cubic root of 144443531 is about 524.6858661949.

Adding to 144443531 its reverse (135344441), we get a palindrome (279787972).

The spelling of 144443531 in words is "one hundred forty-four million, four hundred forty-three thousand, five hundred thirty-one".