320400302443 has 16 divisors (see below), whose sum is σ = 356042344896. Its totient is φ = 286434408960.

The previous prime is 320400302441. The next prime is 320400302471. The reversal of 320400302443 is 344203004023.

It is a cyclic number.

It is not a de Polignac number, because 320400302443 - 2¹ = 320400302441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320400302441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2120871 + ... + 2266912.

It is an arithmetic number, because the mean of its divisors is an integer number (22252646556).

Almost surely, 2^320400302443 is an apocalyptic number.

320400302443 is a deficient number, since it is larger than the sum of its proper divisors (35642042453).

320400302443 is a wasteful number, since it uses less digits than its factorization.

320400302443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387974.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 320400302443 its reverse (344203004023), we get a palindrome (664603306466).

The spelling of 320400302443 in words is "three hundred twenty billion, four hundred million, three hundred two thousand, four hundred forty-three".