1231012330111 has 2 divisors, whose sum is σ = 1231012330112. Its totient is φ = 1231012330110.

The previous prime is 1231012330109. The next prime is 1231012330117. The reversal of 1231012330111 is 1110332101321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231012330111 - 2¹ = 1231012330109 is a prime.

Together with 1231012330109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231012330117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615506165055 + 615506165056.

It is an arithmetic number, because the mean of its divisors is an integer number (615506165056).

Almost surely, 2^{1231012330111} is an apocalyptic number.

1231012330111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231012330111 is an equidigital number, since it uses as much as digits as its factorization.

1231012330111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1231012330111 its reverse (1110332101321), we get a palindrome (2341344431432).

The spelling of 1231012330111 in words is "one trillion, two hundred thirty-one billion, twelve million, three hundred thirty thousand, one hundred eleven".