315117012 has 96 divisors (see below), whose sum is σ = 879766272. Its totient is φ = 85902336.

The previous prime is 315116969. The next prime is 315117037. The reversal of 315117012 is 210711513.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 315117012.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 163768 + ... + 165680.

It is an arithmetic number, because the mean of its divisors is an integer number (9164232).

Almost surely, 2^315117012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315117012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439883136).

315117012 is an abundant number, since it is smaller than the sum of its proper divisors (564649260).

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

315117012 is a wasteful number, since it uses less digits than its factorization.

315117012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2015 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 315117012 is about 17751.5354828815. The cubic root of 315117012 is about 680.4934509461.

Adding to 315117012 its reverse (210711513), we get a palindrome (525828525).

The spelling of 315117012 in words is "three hundred fifteen million, one hundred seventeen thousand, twelve".