320113312031 has 4 divisors (see below), whose sum is σ = 320114463864. Its totient is φ = 320112160200.

The previous prime is 320113312027. The next prime is 320113312081. The reversal of 320113312031 is 130213311023.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 320113312031 - 2² = 320113312027 is a prime.

It is a super-2 number, since 2×320113312031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320113311994 and 320113312012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320113312081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126641 + ... + 810101.

It is an arithmetic number, because the mean of its divisors is an integer number (80028615966).

Almost surely, 2^320113312031 is an apocalyptic number.

320113312031 is a deficient number, since it is larger than the sum of its proper divisors (1151833).

320113312031 is an equidigital number, since it uses as much as digits as its factorization.

320113312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151832.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 320113312031 its reverse (130213311023), we get a palindrome (450326623054).

The spelling of 320113312031 in words is "three hundred twenty billion, one hundred thirteen million, three hundred twelve thousand, thirty-one".