231321010189 has 2 divisors, whose sum is σ = 231321010190. Its totient is φ = 231321010188.

The previous prime is 231321010177. The next prime is 231321010229. The reversal of 231321010189 is 981010123132.

231321010189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222328281289 + 8992728900 = 471517^2 + 94830^2 .

It is a cyclic number.

It is not a de Polignac number, because 231321010189 - 2¹¹ = 231321008141 is a prime.

It is a super-3 number, since 3×231321010189³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231321010189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231321010159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115660505094 + 115660505095.

It is an arithmetic number, because the mean of its divisors is an integer number (115660505095).

Almost surely, 2^231321010189 is an apocalyptic number.

It is an amenable number.

231321010189 is a deficient number, since it is larger than the sum of its proper divisors (1).

231321010189 is an equidigital number, since it uses as much as digits as its factorization.

231321010189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 231321010189 in words is "two hundred thirty-one billion, three hundred twenty-one million, ten thousand, one hundred eighty-nine".