315045870 has 64 divisors (see below), whose sum is σ = 826454016. Its totient is φ = 76515840.

The previous prime is 315045869. The next prime is 315045877. The reversal of 315045870 is 78540513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315045877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5847 + ... + 25773.

It is an arithmetic number, because the mean of its divisors is an integer number (12913344).

Almost surely, 2^315045870 is an apocalyptic number.

315045870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 315045870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413227008).

315045870 is an abundant number, since it is smaller than the sum of its proper divisors (511408146).

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

315045870 is a wasteful number, since it uses less digits than its factorization.

315045870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19985.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 315045870 is about 17749.5315431140. The cubic root of 315045870 is about 680.4422368395.

The spelling of 315045870 in words is "three hundred fifteen million, forty-five thousand, eight hundred seventy".