320121131 has 8 divisors (see below), whose sum is σ = 351316224. Its totient is φ = 289274920.

The previous prime is 320121127. The next prime is 320121149. The reversal of 320121131 is 131121023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320121131 - 2² = 320121127 is a prime.

It is a super-2 number, since 2×320121131² = 204955077025438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320121181) 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 7 ways as a sum of consecutive naturals, for example, 85295 + ... + 88968.

It is an arithmetic number, because the mean of its divisors is an integer number (43914528).

Almost surely, 2^320121131 is an apocalyptic number.

320121131 is a deficient number, since it is larger than the sum of its proper divisors (31195093).

320121131 is a wasteful number, since it uses less digits than its factorization.

320121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174441.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 320121131 is about 17891.9292140339. The cubic root of 320121131 is about 684.0766724067.

Adding to 320121131 its reverse (131121023), we get a palindrome (451242154).

The spelling of 320121131 in words is "three hundred twenty million, one hundred twenty-one thousand, one hundred thirty-one".