315131315 has 8 divisors (see below), whose sum is σ = 378263520. Its totient is φ = 252034432.

The previous prime is 315131309. The next prime is 315131353. The reversal of 315131315 is 513131513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315131315 - 2¹⁸ = 314869171 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18491 + ... + 31179.

It is an arithmetic number, because the mean of its divisors is an integer number (47282940).

Almost surely, 2^315131315 is an apocalyptic number.

315131315 is a deficient number, since it is larger than the sum of its proper divisors (63132205).

315131315 is a wasteful number, since it uses less digits than its factorization.

315131315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17661.

The product of its digits is 675, while the sum is 23.

The square root of 315131315 is about 17751.9383448681. The cubic root of 315131315 is about 680.5037465402.

Adding to 315131315 its reverse (513131513), we get a palindrome (828262828).

The spelling of 315131315 in words is "three hundred fifteen million, one hundred thirty-one thousand, three hundred fifteen".