319336139137 has 4 divisors (see below), whose sum is σ = 319337408260. Its totient is φ = 319334870016.

The previous prime is 319336139119. The next prime is 319336139147. The reversal of 319336139137 is 731931633913.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 731931633913 = 277 ⋅2642352469.

It can be written as a sum of positive squares in 2 ways, for example, as 155243092081 + 164093047056 = 394009^2 + 405084^2 .

It is a cyclic number.

It is not a de Polignac number, because 319336139137 - 2¹¹ = 319336137089 is a prime.

It is a super-3 number, since 3×319336139137³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319336139117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115728 + ... + 807505.

It is an arithmetic number, because the mean of its divisors is an integer number (79834352065).

Almost surely, 2^319336139137 is an apocalyptic number.

It is an amenable number.

319336139137 is a deficient number, since it is larger than the sum of its proper divisors (1269123).

319336139137 is an equidigital number, since it uses as much as digits as its factorization.

319336139137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269122.

The product of its digits is 826686, while the sum is 49.

The spelling of 319336139137 in words is "three hundred nineteen billion, three hundred thirty-six million, one hundred thirty-nine thousand, one hundred thirty-seven".