231240412289 has 2 divisors, whose sum is σ = 231240412290. Its totient is φ = 231240412288.

The previous prime is 231240412261. The next prime is 231240412307. The reversal of 231240412289 is 982214042132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169546297600 + 61694114689 = 411760^2 + 248383^2 .

It is a cyclic number.

It is not a de Polignac number, because 231240412289 - 2⁸ = 231240412033 is a prime.

It is not a weakly prime, because it can be changed into another prime (231240412219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620206144 + 115620206145.

It is an arithmetic number, because the mean of its divisors is an integer number (115620206145).

Almost surely, 2^231240412289 is an apocalyptic number.

It is an amenable number.

231240412289 is a deficient number, since it is larger than the sum of its proper divisors (1).

231240412289 is an equidigital number, since it uses as much as digits as its factorization.

231240412289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 231240412289 in words is "two hundred thirty-one billion, two hundred forty million, four hundred twelve thousand, two hundred eighty-nine".