315144133 has 4 divisors (see below), whose sum is σ = 323661580. Its totient is φ = 306626688.

The previous prime is 315144077. The next prime is 315144143. The reversal of 315144133 is 331441513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331441513 = 13 ⋅25495501.

It can be written as a sum of positive squares in 2 ways, for example, as 293025924 + 22118209 = 17118^2 + 4703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315144133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315144098 and 315144107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315144143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4258668 + ... + 4258741.

It is an arithmetic number, because the mean of its divisors is an integer number (80915395).

Almost surely, 2^315144133 is an apocalyptic number.

It is an amenable number.

315144133 is a deficient number, since it is larger than the sum of its proper divisors (8517447).

315144133 is an equidigital number, since it uses as much as digits as its factorization.

315144133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517446.

The product of its digits is 2160, while the sum is 25.

The square root of 315144133 is about 17752.2993721940. The cubic root of 315144133 is about 680.5129729361.

Adding to 315144133 its reverse (331441513), we get a palindrome (646585646).

The spelling of 315144133 in words is "three hundred fifteen million, one hundred forty-four thousand, one hundred thirty-three".