323144128845 has 24 divisors (see below), whose sum is σ = 560148176952. Its totient is φ = 172333785600.

The previous prime is 323144128841. The next prime is 323144128849. The reversal of 323144128845 is 548821441323.

323144128845 is a `hidden beast` number, since 323 + 1 + 4 + 4 + 1 + 288 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (323144128841) and next prime (323144128849).

It can be written as a sum of positive squares in 4 ways, for example, as 190838796201 + 132305332644 = 436851^2 + 363738^2 .

It is not a de Polignac number, because 323144128845 - 2² = 323144128841 is a prime.

It is a super-2 number, since 2×323144128845² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 323144128845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323144128841) 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 23 ways as a sum of consecutive naturals, for example, 639585 + ... + 1027305.

It is an arithmetic number, because the mean of its divisors is an integer number (23339507373).

Almost surely, 2^323144128845 is an apocalyptic number.

It is an amenable number.

323144128845 is a deficient number, since it is larger than the sum of its proper divisors (237004048107).

323144128845 is a wasteful number, since it uses less digits than its factorization.

323144128845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406253 (or 406250 counting only the distinct ones).

The product of its digits is 737280, while the sum is 45.

The spelling of 323144128845 in words is "three hundred twenty-three billion, one hundred forty-four million, one hundred twenty-eight thousand, eight hundred forty-five".