231230999999 has 2 divisors, whose sum is σ = 231231000000. Its totient is φ = 231230999998.

The previous prime is 231230999921. The next prime is 231231000037. The reversal of 231230999999 is 999999032132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231230999999 - 2⁸ = 231230999743 is a prime.

231230999999 is a modest number, since divided by 999999 gives 231230 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231230999299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115615499999 + 115615500000.

It is an arithmetic number, because the mean of its divisors is an integer number (115615500000).

Almost surely, 2^231230999999 is an apocalyptic number.

231230999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

231230999999 is an equidigital number, since it uses as much as digits as its factorization.

231230999999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19131876, while the sum is 65.

The spelling of 231230999999 in words is "two hundred thirty-one billion, two hundred thirty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".