320530404031 has 2 divisors, whose sum is σ = 320530404032. Its totient is φ = 320530404030.

The previous prime is 320530404017. The next prime is 320530404083. The reversal of 320530404031 is 130404035023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320530404031 - 2⁷ = 320530403903 is a prime.

It is a super-2 number, since 2×320530404031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320530403987 and 320530404005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320530404431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160265202015 + 160265202016.

It is an arithmetic number, because the mean of its divisors is an integer number (160265202016).

Almost surely, 2^320530404031 is an apocalyptic number.

320530404031 is a deficient number, since it is larger than the sum of its proper divisors (1).

320530404031 is an equidigital number, since it uses as much as digits as its factorization.

320530404031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 320530404031 its reverse (130404035023), we get a palindrome (450934439054).

The spelling of 320530404031 in words is "three hundred twenty billion, five hundred thirty million, four hundred four thousand, thirty-one".