320400143003 has 4 divisors (see below), whose sum is σ = 320401289688. Its totient is φ = 320398996320.

The previous prime is 320400142967. The next prime is 320400143009. The reversal of 320400143003 is 300341004023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 300341004023 = 257 ⋅1168642039.

It is a cyclic number.

It is not a de Polignac number, because 320400143003 - 2¹⁶ = 320400077467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320400143009) 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 3 ways as a sum of consecutive naturals, for example, 149843 + ... + 814403.

It is an arithmetic number, because the mean of its divisors is an integer number (80100322422).

Almost surely, 2^320400143003 is an apocalyptic number.

320400143003 is a deficient number, since it is larger than the sum of its proper divisors (1146685).

320400143003 is an equidigital number, since it uses as much as digits as its factorization.

320400143003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146684.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 320400143003 its reverse (300341004023), we get a palindrome (620741147026).

The spelling of 320400143003 in words is "three hundred twenty billion, four hundred million, one hundred forty-three thousand, three".