1312313225 has 24 divisors (see below), whose sum is σ = 1684558848. Its totient is φ = 1013342400.

The previous prime is 1312313209. The next prime is 1312313237. The reversal of 1312313225 is 5223132131.

It is not a de Polignac number, because 1312313225 - 2⁴ = 1312313209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312313225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111890 + ... + 123060.

It is an arithmetic number, because the mean of its divisors is an integer number (70189952).

Almost surely, 2^1312313225 is an apocalyptic number.

It is an amenable number.

1312313225 is a deficient number, since it is larger than the sum of its proper divisors (372245623).

1312313225 is a wasteful number, since it uses less digits than its factorization.

1312313225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11345 (or 11340 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 1312313225 is about 36225.8640338640. The cubic root of 1312313225 is about 1094.8278469725.

Adding to 1312313225 its reverse (5223132131), we get a palindrome (6535445356).

The spelling of 1312313225 in words is "one billion, three hundred twelve million, three hundred thirteen thousand, two hundred twenty-five".