312513225 has 12 divisors (see below), whose sum is σ = 516688656. Its totient is φ = 166673680.

The previous prime is 312513203. The next prime is 312513233. The reversal of 312513225 is 522315213.

It is a happy number.

It is not a de Polignac number, because 312513225 - 2⁹ = 312512713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312513195 and 312513204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2083347 + ... + 2083496.

It is an arithmetic number, because the mean of its divisors is an integer number (43057388).

Almost surely, 2^312513225 is an apocalyptic number.

It is an amenable number.

312513225 is a deficient number, since it is larger than the sum of its proper divisors (204175431).

312513225 is a wasteful number, since it uses less digits than its factorization.

312513225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166856 (or 4166851 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 312513225 is about 17678.0435851935. The cubic root of 312513225 is about 678.6139768598.

Adding to 312513225 its reverse (522315213), we get a palindrome (834828438).

The spelling of 312513225 in words is "three hundred twelve million, five hundred thirteen thousand, two hundred twenty-five".