2331689 has 2 divisors, whose sum is σ = 2331690. Its totient is φ = 2331688.

The previous prime is 2331677. The next prime is 2331691. The reversal of 2331689 is 9861332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2226064 + 105625 = 1492^2 + 325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331689 is a prime.

Together with 2331691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2331649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165844 + 1165845.

It is an arithmetic number, because the mean of its divisors is an integer number (1165845).

2^2331689 is an apocalyptic number.

It is an amenable number.

2331689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331689 is an equidigital number, since it uses as much as digits as its factorization.

2331689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 2331689 is about 1526.9869023669. The cubic root of 2331689 is about 132.6040762920.

The spelling of 2331689 in words is "two million, three hundred thirty-one thousand, six hundred eighty-nine".