311225201 has 8 divisors (see below), whose sum is σ = 357072000. Its totient is φ = 265724928.

The previous prime is 311225197. The next prime is 311225209. The reversal of 311225201 is 102522113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311225201 - 2² = 311225197 is a prime.

It is a super-2 number, since 2×311225201² = 193722251474980802, which contains 22 as substring.

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 311225201.

It is not an unprimeable number, because it can be changed into a prime (311225209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84701 + ... + 88298.

It is an arithmetic number, because the mean of its divisors is an integer number (44634000).

Almost surely, 2^311225201 is an apocalyptic number.

It is an amenable number.

311225201 is a deficient number, since it is larger than the sum of its proper divisors (45846799).

311225201 is a wasteful number, since it uses less digits than its factorization.

311225201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173263.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 311225201 is about 17641.5759216687. The cubic root of 311225201 is about 677.6803900495.

Adding to 311225201 its reverse (102522113), we get a palindrome (413747314).

The spelling of 311225201 in words is "three hundred eleven million, two hundred twenty-five thousand, two hundred one".