315489133 has 4 divisors (see below), whose sum is σ = 320661148. Its totient is φ = 310317120.

The previous prime is 315489127. The next prime is 315489149. The reversal of 315489133 is 331984513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7767369 + 307721764 = 2787^2 + 17542^2 .

It is a cyclic number.

It is not a de Polignac number, because 315489133 - 2⁵ = 315489101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315489092 and 315489101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315489113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585916 + ... + 2586037.

It is an arithmetic number, because the mean of its divisors is an integer number (80165287).

Almost surely, 2^315489133 is an apocalyptic number.

It is an amenable number.

315489133 is a deficient number, since it is larger than the sum of its proper divisors (5172015).

315489133 is an equidigital number, since it uses as much as digits as its factorization.

315489133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172014.

The product of its digits is 38880, while the sum is 37.

The square root of 315489133 is about 17762.0137653364. The cubic root of 315489133 is about 680.7612099913.

The spelling of 315489133 in words is "three hundred fifteen million, four hundred eighty-nine thousand, one hundred thirty-three".