315240466 has 4 divisors (see below), whose sum is σ = 472860702. Its totient is φ = 157620232.

The previous prime is 315240437. The next prime is 315240467. The reversal of 315240466 is 664042513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664042513 = 419 ⋅1584827.

It can be written as a sum of positive squares in only one way, i.e., 315240025 + 441 = 17755^2 + 21^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (315240467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78810115 + ... + 78810118.

Almost surely, 2^315240466 is an apocalyptic number.

315240466 is a deficient number, since it is larger than the sum of its proper divisors (157620236).

315240466 is a wasteful number, since it uses less digits than its factorization.

315240466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157620235.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 315240466 is about 17755.0124190325. The cubic root of 315240466 is about 680.5823054211.

Adding to 315240466 its reverse (664042513), we get a palindrome (979282979).

The spelling of 315240466 in words is "three hundred fifteen million, two hundred forty thousand, four hundred sixty-six".