289742311 has 2 divisors, whose sum is σ = 289742312. Its totient is φ = 289742310.

The previous prime is 289742309. The next prime is 289742347. The reversal of 289742311 is 113247982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 289742311 - 2¹ = 289742309 is a prime.

Together with 289742309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289742711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144871155 + 144871156.

It is an arithmetic number, because the mean of its divisors is an integer number (144871156).

Almost surely, 2^289742311 is an apocalyptic number.

289742311 is a deficient number, since it is larger than the sum of its proper divisors (1).

289742311 is an equidigital number, since it uses as much as digits as its factorization.

289742311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 289742311 is about 17021.8186748655. The cubic root of 289742311 is about 661.7144825897.

The spelling of 289742311 in words is "two hundred eighty-nine million, seven hundred forty-two thousand, three hundred eleven".