144391523 has 8 divisors (see below), whose sum is σ = 153031680. Its totient is φ = 135767680.

The previous prime is 144391517. The next prime is 144391547. The reversal of 144391523 is 325193441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144391523 - 2⁸ = 144391267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144391523.

It is not an unprimeable number, because it can be changed into a prime (144391123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17438 + ... + 24348.

It is an arithmetic number, because the mean of its divisors is an integer number (19128960).

Almost surely, 2^144391523 is an apocalyptic number.

144391523 is a deficient number, since it is larger than the sum of its proper divisors (8640157).

144391523 is a wasteful number, since it uses less digits than its factorization.

144391523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157.

The product of its digits is 12960, while the sum is 32.

The square root of 144391523 is about 12016.3023846772. The cubic root of 144391523 is about 524.6228862468.

The spelling of 144391523 in words is "one hundred forty-four million, three hundred ninety-one thousand, five hundred twenty-three".