319138231 has 8 divisors (see below), whose sum is σ = 337247280. Its totient is φ = 301160448.

The previous prime is 319138223. The next prime is 319138241. The reversal of 319138231 is 132831913.

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

It is a cyclic number.

It is not a de Polignac number, because 319138231 - 2³ = 319138223 is a prime.

It is a super-2 number, since 2×319138231² = 203698420971618722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 319138193 and 319138202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319138241) 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, 27796 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (42155910).

Almost surely, 2^319138231 is an apocalyptic number.

319138231 is a deficient number, since it is larger than the sum of its proper divisors (18109049).

319138231 is a wasteful number, since it uses less digits than its factorization.

319138231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65633.

The product of its digits is 3888, while the sum is 31.

The square root of 319138231 is about 17864.4404054535. The cubic root of 319138231 is about 683.3758248942.

The spelling of 319138231 in words is "three hundred nineteen million, one hundred thirty-eight thousand, two hundred thirty-one".