315150442081 has 2 divisors, whose sum is σ = 315150442082. Its totient is φ = 315150442080.

The previous prime is 315150442069. The next prime is 315150442097. The reversal of 315150442081 is 180244051513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301944755025 + 13205687056 = 549495^2 + 114916^2 .

It is a cyclic number.

It is not a de Polignac number, because 315150442081 - 2³³ = 306560507489 is a prime.

It is a super-2 number, since 2×315150442081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315150446081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157575221040 + 157575221041.

It is an arithmetic number, because the mean of its divisors is an integer number (157575221041).

Almost surely, 2^315150442081 is an apocalyptic number.

It is an amenable number.

315150442081 is a deficient number, since it is larger than the sum of its proper divisors (1).

315150442081 is an equidigital number, since it uses as much as digits as its factorization.

315150442081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 315150442081 its reverse (180244051513), we get a palindrome (495394493594).

The spelling of 315150442081 in words is "three hundred fifteen billion, one hundred fifty million, four hundred forty-two thousand, eighty-one".