320001121 has 24 divisors (see below), whose sum is σ = 364118976. Its totient is φ = 278778240.

The previous prime is 320001107. The next prime is 320001131. The reversal of 320001121 is 121100023.

It is not a de Polignac number, because 320001121 - 2⁵ = 320001089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320001098 and 320001107.

It is not an unprimeable number, because it can be changed into a prime (320001131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3106756 + ... + 3106858.

It is an arithmetic number, because the mean of its divisors is an integer number (15171624).

Almost surely, 2^320001121 is an apocalyptic number.

It is an amenable number.

320001121 is a deficient number, since it is larger than the sum of its proper divisors (44117855).

320001121 is a wasteful number, since it uses less digits than its factorization.

320001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 320001121 is about 17888.5751528734. The cubic root of 320001121 is about 683.9911773710.

Adding to 320001121 its reverse (121100023), we get a palindrome (441101144).

The spelling of 320001121 in words is "three hundred twenty million, one thousand, one hundred twenty-one".