1312123323313 has 16 divisors (see below), whose sum is σ = 1466733312000. Its totient is φ = 1163478188880.

The previous prime is 1312123323281. The next prime is 1312123323319. The reversal of 1312123323313 is 3133233212131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1312123323313 - 2⁵ = 1312123323281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312123323319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1589013 + ... + 2269186.

It is an arithmetic number, because the mean of its divisors is an integer number (91670832000).

Almost surely, 2^{1312123323313} is an apocalyptic number.

It is an amenable number.

1312123323313 is a deficient number, since it is larger than the sum of its proper divisors (154609988687).

1312123323313 is a wasteful number, since it uses less digits than its factorization.

1312123323313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858972.

The product of its digits is 5832, while the sum is 28.

Adding to 1312123323313 its reverse (3133233212131), we get a palindrome (4445356535444).

The spelling of 1312123323313 in words is "one trillion, three hundred twelve billion, one hundred twenty-three million, three hundred twenty-three thousand, three hundred thirteen".