40344430321 has 8 divisors (see below), whose sum is σ = 43449505344. Its totient is φ = 37239592080.

The previous prime is 40344430319. The next prime is 40344430331. The reversal of 40344430321 is 12303444304.

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 40344430321 - 2¹ = 40344430319 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 40344430321.

It is not an unprimeable number, because it can be changed into a prime (40344430331) 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 7 ways as a sum of consecutive naturals, for example, 469890 + ... + 549076.

It is an arithmetic number, because the mean of its divisors is an integer number (5431188168).

Almost surely, 2^40344430321 is an apocalyptic number.

It is an amenable number.

40344430321 is a deficient number, since it is larger than the sum of its proper divisors (3105075023).

40344430321 is a wasteful number, since it uses less digits than its factorization.

40344430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118391.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40344430321 its reverse (12303444304), we get a palindrome (52647874625).

The spelling of 40344430321 in words is "forty billion, three hundred forty-four million, four hundred thirty thousand, three hundred twenty-one".