320440451330 has 32 divisors (see below), whose sum is σ = 579877294464. Its totient is φ = 127492500096.

The previous prime is 320440451327. The next prime is 320440451341. The reversal of 320440451330 is 33154044023.

It is a junction number, because it is equal to n+sod(n) for n = 320440451293 and 320440451302.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1352099 + ... + 1571321.

It is an arithmetic number, because the mean of its divisors is an integer number (18121165452).

Almost surely, 2^320440451330 is an apocalyptic number.

320440451330 is a deficient number, since it is larger than the sum of its proper divisors (259436843134).

320440451330 is a wasteful number, since it uses less digits than its factorization.

320440451330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220010.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 320440451330 its reverse (33154044023), we get a palindrome (353594495353).

The spelling of 320440451330 in words is "three hundred twenty billion, four hundred forty million, four hundred fifty-one thousand, three hundred thirty".