315538141 has 2 divisors, whose sum is σ = 315538142. Its totient is φ = 315538140.

The previous prime is 315538123. The next prime is 315538163. The reversal of 315538141 is 141835513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315240025 + 298116 = 17755^2 + 546^2 .

It is a cyclic number.

It is not a de Polignac number, because 315538141 - 2²¹ = 313440989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315538121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157769070 + 157769071.

It is an arithmetic number, because the mean of its divisors is an integer number (157769071).

Almost surely, 2^315538141 is an apocalyptic number.

It is an amenable number.

315538141 is a deficient number, since it is larger than the sum of its proper divisors (1).

315538141 is an equidigital number, since it uses as much as digits as its factorization.

315538141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 315538141 is about 17763.3932850680. The cubic root of 315538141 is about 680.7964579228.

The spelling of 315538141 in words is "three hundred fifteen million, five hundred thirty-eight thousand, one hundred forty-one".