313220225 has 24 divisors (see below), whose sum is σ = 410807040. Its totient is φ = 236243520.

The previous prime is 313220209. The next prime is 313220231. The reversal of 313220225 is 522022313.

It is not a de Polignac number, because 313220225 - 2⁴ = 313220209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313220197 and 313220206.

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 23 ways as a sum of consecutive naturals, for example, 104447 + ... + 107403.

It is an arithmetic number, because the mean of its divisors is an integer number (17116960).

Almost surely, 2^313220225 is an apocalyptic number.

It is an amenable number.

313220225 is a deficient number, since it is larger than the sum of its proper divisors (97586815).

313220225 is a wasteful number, since it uses less digits than its factorization.

313220225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3204 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 313220225 is about 17698.0288450437. The cubic root of 313220225 is about 679.1253352008.

Adding to 313220225 its reverse (522022313), we get a palindrome (835242538).

The spelling of 313220225 in words is "three hundred thirteen million, two hundred twenty thousand, two hundred twenty-five".