319290138265 has 16 divisors (see below), whose sum is σ = 442134920448. Its totient is φ = 216816158016.

The previous prime is 319290138241. The next prime is 319290138283. The reversal of 319290138265 is 562831092913.

It is a cyclic number.

It is not a de Polignac number, because 319290138265 - 2³¹ = 317142654617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44280742 + ... + 44287951.

It is an arithmetic number, because the mean of its divisors is an integer number (27633432528).

Almost surely, 2^319290138265 is an apocalyptic number.

319290138265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

319290138265 is a deficient number, since it is larger than the sum of its proper divisors (122844782183).

319290138265 is a wasteful number, since it uses less digits than its factorization.

319290138265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88568808.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 319290138265 in words is "three hundred nineteen billion, two hundred ninety million, one hundred thirty-eight thousand, two hundred sixty-five".