315997998 has 8 divisors (see below), whose sum is σ = 631996008. Its totient is φ = 105332664.

The previous prime is 315997951. The next prime is 315998017. The reversal of 315997998 is 899799513.

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

315997998 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26333161 + ... + 26333172.

It is an arithmetic number, because the mean of its divisors is an integer number (78999501).

Almost surely, 2^315997998 is an apocalyptic number.

315997998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315997998 is a wasteful number, since it uses less digits than its factorization.

315997998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52666338.

The product of its digits is 5511240, while the sum is 60.

The square root of 315997998 is about 17776.3325238925. The cubic root of 315997998 is about 681.1270223490.

The spelling of 315997998 in words is "three hundred fifteen million, nine hundred ninety-seven thousand, nine hundred ninety-eight".