2231691659 has 2 divisors, whose sum is σ = 2231691660. Its totient is φ = 2231691658.

The previous prime is 2231691653. The next prime is 2231691673. The reversal of 2231691659 is 9561961322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231691659 is a prime.

It is a super-3 number, since 3×2231691659³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2231691653) 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, 1115845829 + 1115845830.

It is an arithmetic number, because the mean of its divisors is an integer number (1115845830).

Almost surely, 2^2231691659 is an apocalyptic number.

2231691659 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231691659 is an equidigital number, since it uses as much as digits as its factorization.

2231691659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 2231691659 is about 47240.7838525146. The cubic root of 2231691659 is about 1306.8068333328.

The spelling of 2231691659 in words is "two billion, two hundred thirty-one million, six hundred ninety-one thousand, six hundred fifty-nine".