1231333211223 has 48 divisors (see below), whose sum is σ = 1994017800320. Its totient is φ = 756665538336.

The previous prime is 1231333211219. The next prime is 1231333211231. The reversal of 1231333211223 is 3221123331321.

1231333211223 is a `hidden beast` number, since 1 + 2 + 313 + 3 + 321 + 1 + 2 + 23 = 666.

It is not a de Polignac number, because 1231333211223 - 2² = 1231333211219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231333211123) 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 in 47 ways as a sum of consecutive naturals, for example, 3433165 + ... + 3774822.

Almost surely, 2^{1231333211223} is an apocalyptic number.

1231333211223 is a deficient number, since it is larger than the sum of its proper divisors (762684589097).

1231333211223 is an equidigital number, since it uses as much as digits as its factorization.

1231333211223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208058 (or 7208046 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1231333211223 its reverse (3221123331321), we get a palindrome (4452456542544).

The spelling of 1231333211223 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-three million, two hundred eleven thousand, two hundred twenty-three".