289233313 has 2 divisors, whose sum is σ = 289233314. Its totient is φ = 289233312.

The previous prime is 289233293. The next prime is 289233319. The reversal of 289233313 is 313332982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148644864 + 140588449 = 12192^2 + 11857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289233313 is a prime.

It is not a weakly prime, because it can be changed into another prime (289233319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144616656 + 144616657.

It is an arithmetic number, because the mean of its divisors is an integer number (144616657).

Almost surely, 2^289233313 is an apocalyptic number.

It is an amenable number.

289233313 is a deficient number, since it is larger than the sum of its proper divisors (1).

289233313 is an equidigital number, since it uses as much as digits as its factorization.

289233313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 289233313 is about 17006.8607626452. The cubic root of 289233313 is about 661.3267716749.

The spelling of 289233313 in words is "two hundred eighty-nine million, two hundred thirty-three thousand, three hundred thirteen".