144523454531 has 4 divisors (see below), whose sum is σ = 144839698872. Its totient is φ = 144207210192.

The previous prime is 144523454519. The next prime is 144523454561. The reversal of 144523454531 is 135454325441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135454325441 = 4243 ⋅31924187.

It is a cyclic number.

It is not a de Polignac number, because 144523454531 - 2²² = 144519260227 is a prime.

It is a super-2 number, since 2×144523454531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144523454501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158121485 + ... + 158122398.

It is an arithmetic number, because the mean of its divisors is an integer number (36209924718).

Almost surely, 2^144523454531 is an apocalyptic number.

144523454531 is a deficient number, since it is larger than the sum of its proper divisors (316244341).

144523454531 is an equidigital number, since it uses as much as digits as its factorization.

144523454531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316244340.

The product of its digits is 576000, while the sum is 41.

Adding to 144523454531 its reverse (135454325441), we get a palindrome (279977779972).

The spelling of 144523454531 in words is "one hundred forty-four billion, five hundred twenty-three million, four hundred fifty-four thousand, five hundred thirty-one".