289131439813 has 2 divisors, whose sum is σ = 289131439814. Its totient is φ = 289131439812.

The previous prime is 289131439787. The next prime is 289131439867. The reversal of 289131439813 is 318934131982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255533283009 + 33598156804 = 505503^2 + 183298^2 .

It is a cyclic number.

It is not a de Polignac number, because 289131439813 - 2¹³ = 289131431621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289131436813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144565719906 + 144565719907.

It is an arithmetic number, because the mean of its divisors is an integer number (144565719907).

Almost surely, 2^289131439813 is an apocalyptic number.

It is an amenable number.

289131439813 is a deficient number, since it is larger than the sum of its proper divisors (1).

289131439813 is an equidigital number, since it uses as much as digits as its factorization.

289131439813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The spelling of 289131439813 in words is "two hundred eighty-nine billion, one hundred thirty-one million, four hundred thirty-nine thousand, eight hundred thirteen".