315321225 has 12 divisors (see below), whose sum is σ = 521331216. Its totient is φ = 168171280.

The previous prime is 315321211. The next prime is 315321239. The reversal of 315321225 is 522123513.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (315321211) and next prime (315321239).

It is not a de Polignac number, because 315321225 - 2⁶ = 315321161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315321195 and 315321204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2102067 + ... + 2102216.

It is an arithmetic number, because the mean of its divisors is an integer number (43444268).

Almost surely, 2^315321225 is an apocalyptic number.

It is an amenable number.

315321225 is a deficient number, since it is larger than the sum of its proper divisors (206009991).

315321225 is a wasteful number, since it uses less digits than its factorization.

315321225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204296 (or 4204291 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 315321225 is about 17757.2865325759. The cubic root of 315321225 is about 680.6404181525.

Adding to 315321225 its reverse (522123513), we get a palindrome (837444738).

The spelling of 315321225 in words is "three hundred fifteen million, three hundred twenty-one thousand, two hundred twenty-five".