318320511653 has 2 divisors, whose sum is σ = 318320511654. Its totient is φ = 318320511652.

The previous prime is 318320511583. The next prime is 318320511689. The reversal of 318320511653 is 356115023813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318313741249 + 6770404 = 564193^2 + 2602^2 .

It is an emirp because it is prime and its reverse (356115023813) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318320511653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318320511253) 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 as a sum of consecutive naturals, namely, 159160255826 + 159160255827.

It is an arithmetic number, because the mean of its divisors is an integer number (159160255827).

Almost surely, 2^318320511653 is an apocalyptic number.

It is an amenable number.

318320511653 is a deficient number, since it is larger than the sum of its proper divisors (1).

318320511653 is an equidigital number, since it uses as much as digits as its factorization.

318320511653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 318320511653 in words is "three hundred eighteen billion, three hundred twenty million, five hundred eleven thousand, six hundred fifty-three".