231285668749 has 2 divisors, whose sum is σ = 231285668750. Its totient is φ = 231285668748.

The previous prime is 231285668639. The next prime is 231285668767. The reversal of 231285668749 is 947866582132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140292946249 + 90992722500 = 374557^2 + 301650^2 .

It is a cyclic number.

It is not a de Polignac number, because 231285668749 - 2¹⁵ = 231285635981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231286668749) 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, 115642834374 + 115642834375.

It is an arithmetic number, because the mean of its divisors is an integer number (115642834375).

Almost surely, 2^231285668749 is an apocalyptic number.

It is an amenable number.

231285668749 is a deficient number, since it is larger than the sum of its proper divisors (1).

231285668749 is an equidigital number, since it uses as much as digits as its factorization.

231285668749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 61.

The spelling of 231285668749 in words is "two hundred thirty-one billion, two hundred eighty-five million, six hundred sixty-eight thousand, seven hundred forty-nine".