1231332011323 has 2 divisors, whose sum is σ = 1231332011324. Its totient is φ = 1231332011322.

The previous prime is 1231332011233. The next prime is 1231332011339. The reversal of 1231332011323 is 3231102331321.

Together with previous prime (1231332011233) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (3231102331321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231332011323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231332011363) 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, 615666005661 + 615666005662.

It is an arithmetic number, because the mean of its divisors is an integer number (615666005662).

Almost surely, 2^{1231332011323} is an apocalyptic number.

1231332011323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231332011323 is an equidigital number, since it uses as much as digits as its factorization.

1231332011323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1231332011323 its reverse (3231102331321), we get a palindrome (4462434342644).

The spelling of 1231332011323 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-two million, eleven thousand, three hundred twenty-three".