1312000321189 has 2 divisors, whose sum is σ = 1312000321190. Its totient is φ = 1312000321188.

The previous prime is 1312000321157. The next prime is 1312000321201. The reversal of 1312000321189 is 9811230002131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1294475062500 + 17525258689 = 1137750^2 + 132383^2 .

It is an emirp because it is prime and its reverse (9811230002131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312000321189 - 2⁵ = 1312000321157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312000321189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312000321889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656000160594 + 656000160595.

It is an arithmetic number, because the mean of its divisors is an integer number (656000160595).

Almost surely, 2^{1312000321189} is an apocalyptic number.

It is an amenable number.

1312000321189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312000321189 is an equidigital number, since it uses as much as digits as its factorization.

1312000321189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1312000321189 in words is "one trillion, three hundred twelve billion, three hundred twenty-one thousand, one hundred eighty-nine".