312112225 has 12 divisors (see below), whose sum is σ = 388568880. Its totient is φ = 248690000.

The previous prime is 312112223. The next prime is 312112249. The reversal of 312112225 is 522211213.

It is not a de Polignac number, because 312112225 - 2¹ = 312112223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312112223) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 18595 + ... + 31144.

It is an arithmetic number, because the mean of its divisors is an integer number (32380740).

Almost surely, 2^312112225 is an apocalyptic number.

It is an amenable number.

312112225 is a deficient number, since it is larger than the sum of its proper divisors (76456655).

312112225 is a wasteful number, since it uses less digits than its factorization.

312112225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50000 (or 49995 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 312112225 is about 17666.6981917958. The cubic root of 312112225 is about 678.3235990905.

Adding to 312112225 its reverse (522211213), we get a palindrome (834323438).

The spelling of 312112225 in words is "three hundred twelve million, one hundred twelve thousand, two hundred twenty-five".