144312402321 has 6 divisors (see below), whose sum is σ = 208451247810. Its totient is φ = 96208268208.

The previous prime is 144312402319. The next prime is 144312402329. The reversal of 144312402321 is 123204213441.

It can be written as a sum of positive squares in only one way, i.e., 104128190721 + 40184211600 = 322689^2 + 200460^2 .

It is not a de Polignac number, because 144312402321 - 2¹ = 144312402319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144312402329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8017355676 + ... + 8017355693.

It is an arithmetic number, because the mean of its divisors is an integer number (34741874635).

Almost surely, 2^144312402321 is an apocalyptic number.

It is an amenable number.

144312402321 is a deficient number, since it is larger than the sum of its proper divisors (64138845489).

144312402321 is a wasteful number, since it uses less digits than its factorization.

144312402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16034711375 (or 16034711372 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 144312402321 its reverse (123204213441), we get a palindrome (267516615762).

The spelling of 144312402321 in words is "one hundred forty-four billion, three hundred twelve million, four hundred two thousand, three hundred twenty-one".