315197905 has 8 divisors (see below), whose sum is σ = 412622784. Its totient is φ = 229234800.

The previous prime is 315197887. The next prime is 315197917. The reversal of 315197905 is 509791513.

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

It is not a de Polignac number, because 315197905 - 2⁷ = 315197777 is a prime.

It is a super-5 number, since 5×315197905⁵ (a number of 44 digits) contains 55555 as substring.

It is a Duffinian number.

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, 2865381 + ... + 2865490.

It is an arithmetic number, because the mean of its divisors is an integer number (51577848).

Almost surely, 2^315197905 is an apocalyptic number.

It is an amenable number.

315197905 is a deficient number, since it is larger than the sum of its proper divisors (97424879).

315197905 is a wasteful number, since it uses less digits than its factorization.

315197905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730887.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 315197905 is about 17753.8138156285. The cubic root of 315197905 is about 680.5516752934.

The spelling of 315197905 in words is "three hundred fifteen million, one hundred ninety-seven thousand, nine hundred five".