315797941 has 2 divisors, whose sum is σ = 315797942. Its totient is φ = 315797940.

The previous prime is 315797939. The next prime is 315797959. The reversal of 315797941 is 149797513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228916900 + 86881041 = 15130^2 + 9321^2 .

It is an emirp because it is prime and its reverse (149797513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315797941 - 2¹ = 315797939 is a prime.

Together with 315797939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 315797891 and 315797900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315797921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157898970 + 157898971.

It is an arithmetic number, because the mean of its divisors is an integer number (157898971).

Almost surely, 2^315797941 is an apocalyptic number.

It is an amenable number.

315797941 is a deficient number, since it is larger than the sum of its proper divisors (1).

315797941 is an equidigital number, since it uses as much as digits as its factorization.

315797941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 315797941 is about 17770.7045724136. The cubic root of 315797941 is about 680.9832524562.

The spelling of 315797941 in words is "three hundred fifteen million, seven hundred ninety-seven thousand, nine hundred forty-one".