1312440431121 has 12 divisors (see below), whose sum is σ = 1910674435072. Its totient is φ = 868070835576.

The previous prime is 1312440431101. The next prime is 1312440431177. The reversal of 1312440431121 is 1211340442131.

It is a happy number.

1312440431121 is a `hidden beast` number, since 13 + 124 + 404 + 3 + 1 + 121 = 666.

It is not a de Polignac number, because 1312440431121 - 2¹⁴ = 1312440414737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312440431101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574119781 + ... + 574122066.

Almost surely, 2^{1312440431121} is an apocalyptic number.

It is an amenable number.

1312440431121 is a deficient number, since it is larger than the sum of its proper divisors (598234003951).

1312440431121 is a wasteful number, since it uses less digits than its factorization.

1312440431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148241980 (or 1148241977 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1312440431121 its reverse (1211340442131), we get a palindrome (2523780873252).

The spelling of 1312440431121 in words is "one trillion, three hundred twelve billion, four hundred forty million, four hundred thirty-one thousand, one hundred twenty-one".