231330133289 has 2 divisors, whose sum is σ = 231330133290. Its totient is φ = 231330133288.

The previous prime is 231330133271. The next prime is 231330133327. The reversal of 231330133289 is 982331033132.

It is an a-pointer prime, because the next prime (231330133327) can be obtained adding 231330133289 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228739323289 + 2590810000 = 478267^2 + 50900^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330133289 - 2²⁰ = 231329084713 is a prime.

It is not a weakly prime, because it can be changed into another prime (231330133889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665066644 + 115665066645.

It is an arithmetic number, because the mean of its divisors is an integer number (115665066645).

Almost surely, 2^231330133289 is an apocalyptic number.

It is an amenable number.

231330133289 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330133289 is an equidigital number, since it uses as much as digits as its factorization.

231330133289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 38.

The spelling of 231330133289 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred thirty-three thousand, two hundred eighty-nine".