315242250 has 32 divisors (see below), whose sum is σ = 786846528. Its totient is φ = 84064400.

The previous prime is 315242233. The next prime is 315242287. The reversal of 315242250 is 52242513.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 315242250.

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 15 ways as a sum of consecutive naturals, for example, 209412 + ... + 210911.

It is an arithmetic number, because the mean of its divisors is an integer number (24588954).

Almost surely, 2^315242250 is an apocalyptic number.

315242250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315242250 is an abundant number, since it is smaller than the sum of its proper divisors (471604278).

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

315242250 is a wasteful number, since it uses less digits than its factorization.

315242250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420343 (or 420333 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 315242250 is about 17755.0626582955. The cubic root of 315242250 is about 680.5835892628.

Adding to 315242250 its reverse (52242513), we get a palindrome (367484763).

The spelling of 315242250 in words is "three hundred fifteen million, two hundred forty-two thousand, two hundred fifty".