312123331223 has 12 divisors (see below), whose sum is σ = 343385001960. Its totient is φ = 283494332880.

The previous prime is 312123331211. The next prime is 312123331259. The reversal of 312123331223 is 322133321213.

It is not a de Polignac number, because 312123331223 - 2⁴ = 312123331207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312123331192 and 312123331201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312123331823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1019513 + ... + 1289826.

It is an arithmetic number, because the mean of its divisors is an integer number (28615416830).

Almost surely, 2^312123331223 is an apocalyptic number.

312123331223 is a deficient number, since it is larger than the sum of its proper divisors (31261670737).

312123331223 is a wasteful number, since it uses less digits than its factorization.

312123331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310478 (or 2310467 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 312123331223 its reverse (322133321213), we get a palindrome (634256652436).

It can be divided in two parts, 312123 and 331223, that added together give a palindrome (643346).

The spelling of 312123331223 in words is "three hundred twelve billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty-three".