1312240333243 has 16 divisors (see below), whose sum is σ = 1589992096000. Its totient is φ = 1057912568352.

The previous prime is 1312240333207. The next prime is 1312240333253. The reversal of 1312240333243 is 3423330422131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1312240333243 - 2¹⁷ = 1312240202171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312240333253) 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 15 ways as a sum of consecutive naturals, for example, 35472408 + ... + 35509381.

It is an arithmetic number, because the mean of its divisors is an integer number (99374506000).

Almost surely, 2^{1312240333243} is an apocalyptic number.

1312240333243 is a deficient number, since it is larger than the sum of its proper divisors (277751762757).

1312240333243 is a wasteful number, since it uses less digits than its factorization.

1312240333243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70981954.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 1312240333243 its reverse (3423330422131), we get a palindrome (4735570755374).

The spelling of 1312240333243 in words is "one trillion, three hundred twelve billion, two hundred forty million, three hundred thirty-three thousand, two hundred forty-three".