320313043031 has 2 divisors, whose sum is σ = 320313043032. Its totient is φ = 320313043030.

The previous prime is 320313042949. The next prime is 320313043067. The reversal of 320313043031 is 130340313023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320313043031 is a prime.

It is a super-2 number, since 2×320313043031² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 320313042988 and 320313043006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320313043231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156521515 + 160156521516.

It is an arithmetic number, because the mean of its divisors is an integer number (160156521516).

Almost surely, 2^320313043031 is an apocalyptic number.

320313043031 is a deficient number, since it is larger than the sum of its proper divisors (1).

320313043031 is an equidigital number, since it uses as much as digits as its factorization.

320313043031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 320313043031 its reverse (130340313023), we get a palindrome (450653356054).

The spelling of 320313043031 in words is "three hundred twenty billion, three hundred thirteen million, forty-three thousand, thirty-one".