315341321 has 2 divisors, whose sum is σ = 315341322. Its totient is φ = 315341320.

The previous prime is 315341311. The next prime is 315341359. The reversal of 315341321 is 123143513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312582400 + 2758921 = 17680^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 315341321 - 2¹⁰ = 315340297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315341311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157670660 + 157670661.

It is an arithmetic number, because the mean of its divisors is an integer number (157670661).

Almost surely, 2^315341321 is an apocalyptic number.

It is an amenable number.

315341321 is a deficient number, since it is larger than the sum of its proper divisors (1).

315341321 is an equidigital number, since it uses as much as digits as its factorization.

315341321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 315341321 is about 17757.8523757801. The cubic root of 315341321 is about 680.6548773327.

Adding to 315341321 its reverse (123143513), we get a palindrome (438484834).

The spelling of 315341321 in words is "three hundred fifteen million, three hundred forty-one thousand, three hundred twenty-one".