315225135 has 32 divisors (see below), whose sum is σ = 593369280. Its totient is φ = 158229504.

The previous prime is 315225133. The next prime is 315225137. The reversal of 315225135 is 531522513.

It is a happy number.

315225135 is a `hidden beast` number, since 3 + 1 + 522 + 5 + 135 = 666.

It is an interprime number because it is at equal distance from previous prime (315225133) and next prime (315225137).

It is not a de Polignac number, because 315225135 - 2¹ = 315225133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 315225099 and 315225108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315225133) 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, 66382 + ... + 70971.

It is an arithmetic number, because the mean of its divisors is an integer number (18542790).

Almost surely, 2^315225135 is an apocalyptic number.

315225135 is a deficient number, since it is larger than the sum of its proper divisors (278144145).

315225135 is a wasteful number, since it uses less digits than its factorization.

315225135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137384 (or 137378 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 315225135 is about 17754.5806765465. The cubic root of 315225135 is about 680.5712723870.

Adding to 315225135 its reverse (531522513), we get a palindrome (846747648).

The spelling of 315225135 in words is "three hundred fifteen million, two hundred twenty-five thousand, one hundred thirty-five".