311512325 has 6 divisors (see below), whose sum is σ = 386275314. Its totient is φ = 249209840.

The previous prime is 311512319. The next prime is 311512337. The reversal of 311512325 is 523215113.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 87291649 + 224220676 = 9343^2 + 14974^2 .

It is not a de Polignac number, because 311512325 - 2¹² = 311508229 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 311512325.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 6230222 + ... + 6230271.

It is an arithmetic number, because the mean of its divisors is an integer number (64379219).

Almost surely, 2^311512325 is an apocalyptic number.

It is an amenable number.

311512325 is a deficient number, since it is larger than the sum of its proper divisors (74762989).

311512325 is a wasteful number, since it uses less digits than its factorization.

311512325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460503 (or 12460498 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 311512325 is about 17649.7117540202. The cubic root of 311512325 is about 677.8887263256. Note that the first 3 decimals are identical.

Adding to 311512325 its reverse (523215113), we get a palindrome (834727438).

The spelling of 311512325 in words is "three hundred eleven million, five hundred twelve thousand, three hundred twenty-five".