315478813 has 8 divisors (see below), whose sum is σ = 344818208. Its totient is φ = 286863984.

The previous prime is 315478811. The next prime is 315478861. The reversal of 315478813 is 318874513.

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

It is not a de Polignac number, because 315478813 - 2¹ = 315478811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315478811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180231 + ... + 181972.

It is an arithmetic number, because the mean of its divisors is an integer number (43102276).

Almost surely, 2^315478813 is an apocalyptic number.

It is an amenable number.

315478813 is a deficient number, since it is larger than the sum of its proper divisors (29339395).

315478813 is a wasteful number, since it uses less digits than its factorization.

315478813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362283.

The product of its digits is 80640, while the sum is 40.

The square root of 315478813 is about 17761.7232553601. The cubic root of 315478813 is about 680.7537870919.

The spelling of 315478813 in words is "three hundred fifteen million, four hundred seventy-eight thousand, eight hundred thirteen".