320401323 has 12 divisors (see below), whose sum is σ = 504874968. Its totient is φ = 194182560.

The previous prime is 320401321. The next prime is 320401373. The reversal of 320401323 is 323104023.

It is not a de Polignac number, because 320401323 - 2¹ = 320401321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320401296 and 320401305.

It is not an unprimeable number, because it can be changed into a prime (320401321) 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 in 11 ways as a sum of consecutive naturals, for example, 1618090 + ... + 1618287.

It is an arithmetic number, because the mean of its divisors is an integer number (42072914).

Almost surely, 2^320401323 is an apocalyptic number.

320401323 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

320401323 is a deficient number, since it is larger than the sum of its proper divisors (184473645).

320401323 is a wasteful number, since it uses less digits than its factorization.

320401323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236394 (or 3236391 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320401323 is about 17899.7576240574. The cubic root of 320401323 is about 684.2761978341.

Adding to 320401323 its reverse (323104023), we get a palindrome (643505346).

The spelling of 320401323 in words is "three hundred twenty million, four hundred one thousand, three hundred twenty-three".