320341505 has 32 divisors (see below), whose sum is σ = 426653568. Its totient is φ = 228966400.

The previous prime is 320341481. The next prime is 320341513. The reversal of 320341505 is 505143023.

It is not a de Polignac number, because 320341505 - 2¹⁴ = 320325121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1246337 + ... + 1246593.

It is an arithmetic number, because the mean of its divisors is an integer number (13332924).

Almost surely, 2^320341505 is an apocalyptic number.

It is an amenable number.

320341505 is a deficient number, since it is larger than the sum of its proper divisors (106312063).

320341505 is a wasteful number, since it uses less digits than its factorization.

320341505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 320341505 is about 17898.0866295814. The cubic root of 320341505 is about 684.2336110549.

Adding to 320341505 its reverse (505143023), we get a palindrome (825484528).

The spelling of 320341505 in words is "three hundred twenty million, three hundred forty-one thousand, five hundred five".