231330129893 has 2 divisors, whose sum is σ = 231330129894. Its totient is φ = 231330129892.

The previous prime is 231330129889. The next prime is 231330129959. The reversal of 231330129893 is 398921033132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184265864644 + 47064265249 = 429262^2 + 216943^2 .

It is a cyclic number.

It is not a de Polignac number, because 231330129893 - 2² = 231330129889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231330120893) 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, 115665064946 + 115665064947.

It is an arithmetic number, because the mean of its divisors is an integer number (115665064947).

Almost surely, 2^231330129893 is an apocalyptic number.

It is an amenable number.

231330129893 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330129893 is an equidigital number, since it uses as much as digits as its factorization.

231330129893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 231330129893 in words is "two hundred thirty-one billion, three hundred thirty million, one hundred twenty-nine thousand, eight hundred ninety-three".