1231323311103 has 8 divisors (see below), whose sum is σ = 1643154567216. Its totient is φ = 820187131200.

The previous prime is 1231323311047. The next prime is 1231323311219. The reversal of 1231323311103 is 3011133231321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1231323311103 - 2³⁰ = 1230249569279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231323319103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173764918 + ... + 173772003.

It is an arithmetic number, because the mean of its divisors is an integer number (205394320902).

Almost surely, 2^{1231323311103} is an apocalyptic number.

1231323311103 is a deficient number, since it is larger than the sum of its proper divisors (411831256113).

1231323311103 is a wasteful number, since it uses less digits than its factorization.

1231323311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347538105.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1231323311103 its reverse (3011133231321), we get a palindrome (4242456542424).

The spelling of 1231323311103 in words is "one trillion, two hundred thirty-one billion, three hundred twenty-three million, three hundred eleven thousand, one hundred three".