320355121 has 4 divisors (see below), whose sum is σ = 320709232. Its totient is φ = 320001012.

The previous prime is 320355071. The next prime is 320355131. The reversal of 320355121 is 121553023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320355121 - 2⁹ = 320354609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320355092 and 320355101.

It is not an unprimeable number, because it can be changed into a prime (320355131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175695 + ... + 177508.

It is an arithmetic number, because the mean of its divisors is an integer number (80177308).

Almost surely, 2^320355121 is an apocalyptic number.

It is an amenable number.

320355121 is a deficient number, since it is larger than the sum of its proper divisors (354111).

320355121 is an equidigital number, since it uses as much as digits as its factorization.

320355121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354110.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 320355121 is about 17898.4670013943. The cubic root of 320355121 is about 684.2433052851.

The spelling of 320355121 in words is "three hundred twenty million, three hundred fifty-five thousand, one hundred twenty-one".