320501052331 has 2 divisors, whose sum is σ = 320501052332. Its totient is φ = 320501052330.

The previous prime is 320501052329. The next prime is 320501052353. The reversal of 320501052331 is 133250105023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320501052331 - 2¹ = 320501052329 is a prime.

It is a super-2 number, since 2×320501052331² (a number of 24 digits) contains 22 as substring.

Together with 320501052329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 320501052296 and 320501052305.

It is not a weakly prime, because it can be changed into another prime (320501052631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160250526165 + 160250526166.

It is an arithmetic number, because the mean of its divisors is an integer number (160250526166).

Almost surely, 2^320501052331 is an apocalyptic number.

320501052331 is a deficient number, since it is larger than the sum of its proper divisors (1).

320501052331 is an equidigital number, since it uses as much as digits as its factorization.

320501052331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 320501052331 its reverse (133250105023), we get a palindrome (453751157354).

The spelling of 320501052331 in words is "three hundred twenty billion, five hundred one million, fifty-two thousand, three hundred thirty-one".