320130121 has 2 divisors, whose sum is σ = 320130122. Its totient is φ = 320130120.

The previous prime is 320130089. The next prime is 320130131. The reversal of 320130121 is 121031023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258727225 + 61402896 = 16085^2 + 7836^2 .

It is a cyclic number.

It is not a de Polignac number, because 320130121 - 2⁵ = 320130089 is a prime.

It is not a weakly prime, because it can be changed into another prime (320130131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160065060 + 160065061.

It is an arithmetic number, because the mean of its divisors is an integer number (160065061).

Almost surely, 2^320130121 is an apocalyptic number.

It is an amenable number.

320130121 is a deficient number, since it is larger than the sum of its proper divisors (1).

320130121 is an equidigital number, since it uses as much as digits as its factorization.

320130121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320130121 is about 17892.1804428639. The cubic root of 320130121 is about 684.0830760158.

Adding to 320130121 its reverse (121031023), we get a palindrome (441161144).

The spelling of 320130121 in words is "three hundred twenty million, one hundred thirty thousand, one hundred twenty-one".