320326143005 has 16 divisors (see below), whose sum is σ = 419406513984. Its totient is φ = 232925316480.

The previous prime is 320326142963. The next prime is 320326143019. The reversal of 320326143005 is 500341623023.

It is not a de Polignac number, because 320326143005 - 2¹⁶ = 320326077469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157112 + ... + 815681.

It is an arithmetic number, because the mean of its divisors is an integer number (26212907124).

Almost surely, 2^320326143005 is an apocalyptic number.

It is an amenable number.

320326143005 is a deficient number, since it is larger than the sum of its proper divisors (99080370979).

320326143005 is a wasteful number, since it uses less digits than its factorization.

320326143005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978796.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 320326143005 its reverse (500341623023), we get a palindrome (820667766028).

The spelling of 320326143005 in words is "three hundred twenty billion, three hundred twenty-six million, one hundred forty-three thousand, five".