2142310320989 has 2 divisors, whose sum is σ = 2142310320990. Its totient is φ = 2142310320988.

The previous prime is 2142310320959. The next prime is 2142310321087. The reversal of 2142310320989 is 9890230132412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1749093536089 + 393216784900 = 1322533^2 + 627070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142310320989 is a prime.

It is a super-2 number, since 2×2142310320989² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2142310320929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071155160494 + 1071155160495.

It is an arithmetic number, because the mean of its divisors is an integer number (1071155160495).

Almost surely, 2^{2142310320989} is an apocalyptic number.

It is an amenable number.

2142310320989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2142310320989 is an equidigital number, since it uses as much as digits as its factorization.

2142310320989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 2142310320989 in words is "two trillion, one hundred forty-two billion, three hundred ten million, three hundred twenty thousand, nine hundred eighty-nine".