320312112012331 has 2 divisors, whose sum is σ = 320312112012332. Its totient is φ = 320312112012330.

The previous prime is 320312112012329. The next prime is 320312112012397. The reversal of 320312112012331 is 133210211213023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320312112012331 - 2¹ = 320312112012329 is a prime.

It is a super-2 number, since 2×320312112012331² (a number of 30 digits) contains 22 as substring.

Together with 320312112012329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 320312112012296 and 320312112012305.

It is not a weakly prime, because it can be changed into another prime (320312112712331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156056006165 + 160156056006166.

It is an arithmetic number, because the mean of its divisors is an integer number (160156056006166).

Almost surely, 2^{320312112012331} is an apocalyptic number.

320312112012331 is a deficient number, since it is larger than the sum of its proper divisors (1).

320312112012331 is an equidigital number, since it uses as much as digits as its factorization.

320312112012331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 320312112012331 its reverse (133210211213023), we get a palindrome (453522323225354).

The spelling of 320312112012331 in words is "three hundred twenty trillion, three hundred twelve billion, one hundred twelve million, twelve thousand, three hundred thirty-one".