144511531 has 2 divisors, whose sum is σ = 144511532. Its totient is φ = 144511530.

The previous prime is 144511487. The next prime is 144511559. The reversal of 144511531 is 135115441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144511531 - 2¹⁷ = 144380459 is a prime.

It is a super-2 number, since 2×144511531² = 41767165183927922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144511496 and 144511505.

It is not a weakly prime, because it can be changed into another prime (144512531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72255765 + 72255766.

It is an arithmetic number, because the mean of its divisors is an integer number (72255766).

Almost surely, 2^144511531 is an apocalyptic number.

144511531 is a deficient number, since it is larger than the sum of its proper divisors (1).

144511531 is an equidigital number, since it uses as much as digits as its factorization.

144511531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 144511531 is about 12021.2948969735. The cubic root of 144511531 is about 524.7681891190.

Adding to 144511531 its reverse (135115441), we get a palindrome (279626972).

The spelling of 144511531 in words is "one hundred forty-four million, five hundred eleven thousand, five hundred thirty-one".