1231112231223 has 16 divisors (see below), whose sum is σ = 1876034635776. Its totient is φ = 703472418720.

The previous prime is 1231112231189. The next prime is 1231112231269. The reversal of 1231112231223 is 3221322111321.

It is not a de Polignac number, because 1231112231223 - 2⁸ = 1231112230967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231112231193 and 1231112231202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231112231023) 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 in 15 ways as a sum of consecutive naturals, for example, 83608 + ... + 1571373.

It is an arithmetic number, because the mean of its divisors is an integer number (117252164736).

Almost surely, 2^{1231112231223} is an apocalyptic number.

1231112231223 is a deficient number, since it is larger than the sum of its proper divisors (644922404553).

1231112231223 is a wasteful number, since it uses less digits than its factorization.

1231112231223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1690414.

The product of its digits is 864, while the sum is 24.

Adding to 1231112231223 its reverse (3221322111321), we get a palindrome (4452434342544).

The spelling of 1231112231223 in words is "one trillion, two hundred thirty-one billion, one hundred twelve million, two hundred thirty-one thousand, two hundred twenty-three".