289050731 has 2 divisors, whose sum is σ = 289050732. Its totient is φ = 289050730.

The previous prime is 289050709. The next prime is 289050733. The reversal of 289050731 is 137050982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289050731 is a prime.

It is a super-2 number, since 2×289050731² = 167100650183268722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 289050733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 289050691 and 289050700.

It is not a weakly prime, because it can be changed into another prime (289050733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144525365 + 144525366.

It is an arithmetic number, because the mean of its divisors is an integer number (144525366).

Almost surely, 2^289050731 is an apocalyptic number.

289050731 is a deficient number, since it is larger than the sum of its proper divisors (1).

289050731 is an equidigital number, since it uses as much as digits as its factorization.

289050731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 289050731 is about 17001.4920227608. The cubic root of 289050731 is about 661.1875855627.

The spelling of 289050731 in words is "two hundred eighty-nine million, fifty thousand, seven hundred thirty-one".