4001321344 has 16 divisors (see below), whose sum is σ = 7971382620. Its totient is φ = 2000660608.

The previous prime is 4001321341. The next prime is 4001321347. The reversal of 4001321344 is 4431231004.

It is an interprime number because it is at equal distance from previous prime (4001321341) and next prime (4001321347).

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001321341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15630034 + ... + 15630289.

Almost surely, 2^4001321344 is an apocalyptic number.

It is an amenable number.

4001321344 is a deficient number, since it is larger than the sum of its proper divisors (3970061276).

4001321344 is an equidigital number, since it uses as much as digits as its factorization.

4001321344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31260337 (or 31260325 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4001321344 is about 63255.9984823574. The cubic root of 4001321344 is about 1587.5758246297.

Adding to 4001321344 its reverse (4431231004), we get a palindrome (8432552348).

The spelling of 4001321344 in words is "four billion, one million, three hundred twenty-one thousand, three hundred forty-four".