313440225 has 48 divisors (see below), whose sum is σ = 611389440. Its totient is φ = 138657600.

The previous prime is 313440217. The next prime is 313440247. The reversal of 313440225 is 522044313.

It is not a de Polignac number, because 313440225 - 2³ = 313440217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 313440195 and 313440204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6646 + ... + 25904.

It is an arithmetic number, because the mean of its divisors is an integer number (12737280).

Almost surely, 2^313440225 is an apocalyptic number.

313440225 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

313440225 is a deficient number, since it is larger than the sum of its proper divisors (297949215).

313440225 is a wasteful number, since it uses less digits than its factorization.

313440225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19310 (or 19305 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 313440225 is about 17704.2431354746. The cubic root of 313440225 is about 679.2842996132.

Adding to 313440225 its reverse (522044313), we get a palindrome (835484538).

The spelling of 313440225 in words is "three hundred thirteen million, four hundred forty thousand, two hundred twenty-five".