1313123311012 has 6 divisors (see below), whose sum is σ = 2297965794278. Its totient is φ = 656561655504.

The previous prime is 1313123311007. The next prime is 1313123311013. The reversal of 1313123311012 is 2101133213131.

It can be written as a sum of positive squares in only one way, i.e., 1176322453056 + 136800857956 = 1084584^2 + 369866^2 .

It is not an unprimeable number, because it can be changed into a prime (1313123311013) 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 as a sum of consecutive naturals, namely, 164140413873 + ... + 164140413880.

Almost surely, 2^{1313123311012} is an apocalyptic number.

It is an amenable number.

1313123311012 is a deficient number, since it is larger than the sum of its proper divisors (984842483266).

1313123311012 is a wasteful number, since it uses less digits than its factorization.

1313123311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328280827757 (or 328280827755 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1313123311012 its reverse (2101133213131), we get a palindrome (3414256524143).

The spelling of 1313123311012 in words is "one trillion, three hundred thirteen billion, one hundred twenty-three million, three hundred eleven thousand, twelve".