320344304351 has 2 divisors, whose sum is σ = 320344304352. Its totient is φ = 320344304350.

The previous prime is 320344304311. The next prime is 320344304363. The reversal of 320344304351 is 153403443023.

It is a strong prime.

It is an emirp because it is prime and its reverse (153403443023) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320344304351 is a prime.

It is a super-2 number, since 2×320344304351² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320344304311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160172152175 + 160172152176.

It is an arithmetic number, because the mean of its divisors is an integer number (160172152176).

Almost surely, 2^320344304351 is an apocalyptic number.

320344304351 is a deficient number, since it is larger than the sum of its proper divisors (1).

320344304351 is an equidigital number, since it uses as much as digits as its factorization.

320344304351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 320344304351 its reverse (153403443023), we get a palindrome (473747747374).

The spelling of 320344304351 in words is "three hundred twenty billion, three hundred forty-four million, three hundred four thousand, three hundred fifty-one".