315222402 has 64 divisors (see below), whose sum is σ = 716688000. Its totient is φ = 91553280.

The previous prime is 315222359. The next prime is 315222419. The reversal of 315222402 is 204222513.

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, 299974 + ... + 301022.

It is an arithmetic number, because the mean of its divisors is an integer number (11198250).

Almost surely, 2^315222402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315222402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358344000).

315222402 is an abundant number, since it is smaller than the sum of its proper divisors (401465598).

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

315222402 is a wasteful number, since it uses less digits than its factorization.

315222402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 315222402 is about 17754.5037103266. The cubic root of 315222402 is about 680.5693055317.

Adding to 315222402 its reverse (204222513), we get a palindrome (519444915).

The spelling of 315222402 in words is "three hundred fifteen million, two hundred twenty-two thousand, four hundred two".