319172228 has 6 divisors (see below), whose sum is σ = 558551406. Its totient is φ = 159586112.

The previous prime is 319172213. The next prime is 319172233. The reversal of 319172228 is 822271913.

It can be written as a sum of positive squares in only one way, i.e., 277155904 + 42016324 = 16648^2 + 6482^2 .

It is a super-2 number, since 2×319172228² = 203741822252967968, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 39896525 + ... + 39896532.

It is an arithmetic number, because the mean of its divisors is an integer number (93091901).

Almost surely, 2^319172228 is an apocalyptic number.

It is an amenable number.

319172228 is a deficient number, since it is larger than the sum of its proper divisors (239379178).

319172228 is a wasteful number, since it uses less digits than its factorization.

319172228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79793061 (or 79793059 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 319172228 is about 17865.3919072602. The cubic root of 319172228 is about 683.4000901402.

The spelling of 319172228 in words is "three hundred nineteen million, one hundred seventy-two thousand, two hundred twenty-eight".