320011355 has 16 divisors (see below), whose sum is σ = 394015104. Its totient is φ = 249361920.

The previous prime is 320011343. The next prime is 320011399. The reversal of 320011355 is 553110023.

It is not a de Polignac number, because 320011355 - 2⁸ = 320011099 is a prime.

It is a Duffinian 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, 224174 + ... + 225596.

It is an arithmetic number, because the mean of its divisors is an integer number (24625944).

Almost surely, 2^320011355 is an apocalyptic number.

320011355 is a deficient number, since it is larger than the sum of its proper divisors (74003749).

320011355 is a wasteful number, since it uses less digits than its factorization.

320011355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 320011355 is about 17888.8611990814. The cubic root of 320011355 is about 683.9984688987.

Adding to 320011355 its reverse (553110023), we get a palindrome (873121378).

The spelling of 320011355 in words is "three hundred twenty million, eleven thousand, three hundred fifty-five".