319272937509 has 4 divisors (see below), whose sum is σ = 425697250016. Its totient is φ = 212848625004.

The previous prime is 319272937453. The next prime is 319272937537. The reversal of 319272937509 is 905739272913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 905739272913 = 3 ⋅301913090971.

It is not a de Polignac number, because 319272937509 - 2¹⁹ = 319272413221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319272937609) 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, 53212156249 + ... + 53212156254.

It is an arithmetic number, because the mean of its divisors is an integer number (106424312504).

Almost surely, 2^319272937509 is an apocalyptic number.

It is an amenable number.

319272937509 is a deficient number, since it is larger than the sum of its proper divisors (106424312507).

319272937509 is a wasteful number, since it uses less digits than its factorization.

319272937509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106424312506.

The product of its (nonzero) digits is 6429780, while the sum is 57.

The spelling of 319272937509 in words is "three hundred nineteen billion, two hundred seventy-two million, nine hundred thirty-seven thousand, five hundred nine".