320401131131 has 2 divisors, whose sum is σ = 320401131132. Its totient is φ = 320401131130.

The previous prime is 320401131107. The next prime is 320401131139. The reversal of 320401131131 is 131131104023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320401131131 - 2¹⁰ = 320401130107 is a prime.

It is a super-2 number, since 2×320401131131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320401131139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160200565565 + 160200565566.

It is an arithmetic number, because the mean of its divisors is an integer number (160200565566).

Almost surely, 2^320401131131 is an apocalyptic number.

320401131131 is a deficient number, since it is larger than the sum of its proper divisors (1).

320401131131 is an equidigital number, since it uses as much as digits as its factorization.

320401131131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 320401131131 its reverse (131131104023), we get a palindrome (451532235154).

The spelling of 320401131131 in words is "three hundred twenty billion, four hundred one million, one hundred thirty-one thousand, one hundred thirty-one".