313243225 has 6 divisors (see below), whose sum is σ = 388421630. Its totient is φ = 250594560.

The previous prime is 313243223. The next prime is 313243283. The reversal of 313243225 is 522342313.

It can be written as a sum of positive squares in 3 ways, for example, as 88003161 + 225240064 = 9381^2 + 15008^2 .

It is not a de Polignac number, because 313243225 - 2¹ = 313243223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 12529729 = 313243225 / (3 + 1 + 3 + 2 + 4 + 3 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 313243225.

It is not an unprimeable number, because it can be changed into a prime (313243223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6264840 + ... + 6264889.

Almost surely, 2^313243225 is an apocalyptic number.

It is an amenable number.

313243225 is a deficient number, since it is larger than the sum of its proper divisors (75178405).

313243225 is a wasteful number, since it uses less digits than its factorization.

313243225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12529739 (or 12529734 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 313243225 is about 17698.6786229933. The cubic root of 313243225 is about 679.1419576911.

Adding to 313243225 its reverse (522342313), we get a palindrome (835585538).

The spelling of 313243225 in words is "three hundred thirteen million, two hundred forty-three thousand, two hundred twenty-five".