312695594389 has 16 divisors (see below), whose sum is σ = 321655974640. Its totient is φ = 303892922880.

The previous prime is 312695594383. The next prime is 312695594459. The reversal of 312695594389 is 983495596213.

It can be written as a sum of positive squares in 8 ways, for example, as 48953775025 + 263741819364 = 221255^2 + 513558^2 .

It is a cyclic number.

It is not a de Polignac number, because 312695594389 - 2¹³ = 312695586197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312695594389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312695594383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1331659 + ... + 1548775.

It is an arithmetic number, because the mean of its divisors is an integer number (20103498415).

Almost surely, 2^312695594389 is an apocalyptic number.

It is an amenable number.

312695594389 is a deficient number, since it is larger than the sum of its proper divisors (8960380251).

312695594389 is a wasteful number, since it uses less digits than its factorization.

312695594389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217480.

The product of its digits is 62985600, while the sum is 64.

The spelling of 312695594389 in words is "three hundred twelve billion, six hundred ninety-five million, five hundred ninety-four thousand, three hundred eighty-nine".