144528557431 has 4 divisors (see below), whose sum is σ = 144732406600. Its totient is φ = 144324708264.

The previous prime is 144528557413. The next prime is 144528557471. The reversal of 144528557431 is 134755825441.

144528557431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134755825441 = 31 ⋅4346962111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144528557431 is a prime.

It is a super-2 number, since 2×144528557431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144528557471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101923521 + ... + 101924938.

It is an arithmetic number, because the mean of its divisors is an integer number (36183101650).

Almost surely, 2^144528557431 is an apocalyptic number.

144528557431 is a deficient number, since it is larger than the sum of its proper divisors (203849169).

144528557431 is an equidigital number, since it uses as much as digits as its factorization.

144528557431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203849168.

The product of its digits is 2688000, while the sum is 49.

The spelling of 144528557431 in words is "one hundred forty-four billion, five hundred twenty-eight million, five hundred fifty-seven thousand, four hundred thirty-one".