315338848681 has 2 divisors, whose sum is σ = 315338848682. Its totient is φ = 315338848680.

The previous prime is 315338848679. The next prime is 315338848711. The reversal of 315338848681 is 186848833513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237753760000 + 77585088681 = 487600^2 + 278541^2 .

It is a cyclic number.

It is not a de Polignac number, because 315338848681 - 2¹ = 315338848679 is a prime.

It is a super-2 number, since 2×315338848681² (a number of 24 digits) contains 22 as substring.

Together with 315338848679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (315338848621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157669424340 + 157669424341.

It is an arithmetic number, because the mean of its divisors is an integer number (157669424341).

Almost surely, 2^315338848681 is an apocalyptic number.

It is an amenable number.

315338848681 is a deficient number, since it is larger than the sum of its proper divisors (1).

315338848681 is an equidigital number, since it uses as much as digits as its factorization.

315338848681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13271040, while the sum is 58.

The spelling of 315338848681 in words is "three hundred fifteen billion, three hundred thirty-eight million, eight hundred forty-eight thousand, six hundred eighty-one".