231776782118269 has 2 divisors, whose sum is σ = 231776782118270. Its totient is φ = 231776782118268.

The previous prime is 231776782118257. The next prime is 231776782118291. The reversal of 231776782118269 is 962811287677132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223348182846244 + 8428599272025 = 14944838^2 + 2903205^2 .

It is a cyclic number.

It is not a de Polignac number, because 231776782118269 - 2²⁹ = 231776245247357 is a prime.

It is a super-2 number, since 2×231776782118269² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231776782118198 and 231776782118207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231776782118209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115888391059134 + 115888391059135.

It is an arithmetic number, because the mean of its divisors is an integer number (115888391059135).

Almost surely, 2^{231776782118269} is an apocalyptic number.

It is an amenable number.

231776782118269 is a deficient number, since it is larger than the sum of its proper divisors (1).

231776782118269 is an equidigital number, since it uses as much as digits as its factorization.

231776782118269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170698752, while the sum is 70.

The spelling of 231776782118269 in words is "two hundred thirty-one trillion, seven hundred seventy-six billion, seven hundred eighty-two million, one hundred eighteen thousand, two hundred sixty-nine".