315023250 has 64 divisors (see below), whose sum is σ = 791856000. Its totient is φ = 83412800.

The previous prime is 315023227. The next prime is 315023257. The reversal of 315023250 is 52320513.

It is not an unprimeable number, because it can be changed into a prime (315023257) 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, 110341 + ... + 113159.

It is an arithmetic number, because the mean of its divisors is an integer number (12372750).

Almost surely, 2^315023250 is an apocalyptic number.

315023250 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 315023250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395928000).

315023250 is an abundant number, since it is smaller than the sum of its proper divisors (476832750).

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

315023250 is a wasteful number, since it uses less digits than its factorization.

315023250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 315023250 is about 17748.8943317605. The cubic root of 315023250 is about 680.4259514101.

Adding to 315023250 its reverse (52320513), we get a palindrome (367343763).

The spelling of 315023250 in words is "three hundred fifteen million, twenty-three thousand, two hundred fifty".