320541131 has 2 divisors, whose sum is σ = 320541132. Its totient is φ = 320541130.

The previous prime is 320541127. The next prime is 320541161. The reversal of 320541131 is 131145023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320541131 - 2² = 320541127 is a prime.

It is a super-2 number, since 2×320541131² = 205493233325518322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320541161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160270565 + 160270566.

It is an arithmetic number, because the mean of its divisors is an integer number (160270566).

Almost surely, 2^320541131 is an apocalyptic number.

320541131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320541131 is an equidigital number, since it uses as much as digits as its factorization.

320541131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 320541131 is about 17903.6625024044. The cubic root of 320541131 is about 684.3757119625.

Adding to 320541131 its reverse (131145023), we get a palindrome (451686154).

The spelling of 320541131 in words is "three hundred twenty million, five hundred forty-one thousand, one hundred thirty-one".