231630783269 has 2 divisors, whose sum is σ = 231630783270. Its totient is φ = 231630783268.

The previous prime is 231630783257. The next prime is 231630783287. The reversal of 231630783269 is 962387036132.

It is a happy number.

231630783269 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., 152675403169 + 78955380100 = 390737^2 + 280990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231630783269 is a prime.

It is a super-2 number, since 2×231630783269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231630783299) 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, 115815391634 + 115815391635.

It is an arithmetic number, because the mean of its divisors is an integer number (115815391635).

Almost surely, 2^231630783269 is an apocalyptic number.

It is an amenable number.

231630783269 is a deficient number, since it is larger than the sum of its proper divisors (1).

231630783269 is an equidigital number, since it uses as much as digits as its factorization.

231630783269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 231630783269 in words is "two hundred thirty-one billion, six hundred thirty million, seven hundred eighty-three thousand, two hundred sixty-nine".