315106018 has 4 divisors (see below), whose sum is σ = 472659030. Its totient is φ = 157553008.

The previous prime is 315106009. The next prime is 315106019. The reversal of 315106018 is 810601513.

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

It can be written as a sum of positive squares in only one way, i.e., 192848769 + 122257249 = 13887^2 + 11057^2 .

It is a super-3 number, since 3×315106018³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315105983 and 315106001.

It is not an unprimeable number, because it can be changed into a prime (315106019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78776503 + ... + 78776506.

Almost surely, 2^315106018 is an apocalyptic number.

315106018 is a deficient number, since it is larger than the sum of its proper divisors (157553012).

315106018 is a wasteful number, since it uses less digits than its factorization.

315106018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157553011.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 315106018 is about 17751.2258168274. The cubic root of 315106018 is about 680.4855370266.

The spelling of 315106018 in words is "three hundred fifteen million, one hundred six thousand, eighteen".