320504151131 has 2 divisors, whose sum is σ = 320504151132. Its totient is φ = 320504151130.

The previous prime is 320504151119. The next prime is 320504151157. The reversal of 320504151131 is 131151405023.

It is an a-pointer prime, because the next prime (320504151157) can be obtained adding 320504151131 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320504151131 - 2⁶ = 320504151067 is a prime.

It is a super-2 number, since 2×320504151131² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320504151131.

It is not a weakly prime, because it can be changed into another prime (320504151101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160252075565 + 160252075566.

It is an arithmetic number, because the mean of its divisors is an integer number (160252075566).

Almost surely, 2^320504151131 is an apocalyptic number.

320504151131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320504151131 is an equidigital number, since it uses as much as digits as its factorization.

320504151131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 320504151131 its reverse (131151405023), we get a palindrome (451655556154).

The spelling of 320504151131 in words is "three hundred twenty billion, five hundred four million, one hundred fifty-one thousand, one hundred thirty-one".