243232669 has 2 divisors, whose sum is σ = 243232670. Its totient is φ = 243232668.

The previous prime is 243232663. The next prime is 243232673. The reversal of 243232669 is 966232342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178623225 + 64609444 = 13365^2 + 8038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243232669 is a prime.

It is a super-2 number, since 2×243232669² = 118324262537727122, which contains 22 as substring.

It is equal to p_13328956 and since 243232669 and 13328956 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243232663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121616334 + 121616335.

It is an arithmetic number, because the mean of its divisors is an integer number (121616335).

Almost surely, 2^243232669 is an apocalyptic number.

It is an amenable number.

243232669 is a deficient number, since it is larger than the sum of its proper divisors (1).

243232669 is an equidigital number, since it uses as much as digits as its factorization.

243232669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 37.

The square root of 243232669 is about 15595.9183442335. The cubic root of 243232669 is about 624.2242484135.

The spelling of 243232669 in words is "two hundred forty-three million, two hundred thirty-two thousand, six hundred sixty-nine".