315741121 has 2 divisors, whose sum is σ = 315741122. Its totient is φ = 315741120.

The previous prime is 315741113. The next prime is 315741149. The reversal of 315741121 is 121147513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280931121 + 34810000 = 16761^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 315741121 - 2³ = 315741113 is a prime.

It is not a weakly prime, because it can be changed into another prime (315741191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157870560 + 157870561.

It is an arithmetic number, because the mean of its divisors is an integer number (157870561).

Almost surely, 2^315741121 is an apocalyptic number.

It is an amenable number.

315741121 is a deficient number, since it is larger than the sum of its proper divisors (1).

315741121 is an equidigital number, since it uses as much as digits as its factorization.

315741121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 315741121 is about 17769.1058019249. The cubic root of 315741121 is about 680.9424079960.

Adding to 315741121 its reverse (121147513), we get a palindrome (436888634).

The spelling of 315741121 in words is "three hundred fifteen million, seven hundred forty-one thousand, one hundred twenty-one".