1312431042243 has 8 divisors (see below), whose sum is σ = 1749913676800. Its totient is φ = 874951217928.

The previous prime is 1312431042227. The next prime is 1312431042269. The reversal of 1312431042243 is 3422401342131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312431042243 - 2⁴ = 1312431042227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312431042243.

It is not an unprimeable number, because it can be changed into a prime (1312431042343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927318 + ... + 1866756.

It is an arithmetic number, because the mean of its divisors is an integer number (218739209600).

Almost surely, 2^{1312431042243} is an apocalyptic number.

1312431042243 is a deficient number, since it is larger than the sum of its proper divisors (437482634557).

1312431042243 is an equidigital number, since it uses as much as digits as its factorization.

1312431042243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405121.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 1312431042243 its reverse (3422401342131), we get a palindrome (4734832384374).

The spelling of 1312431042243 in words is "one trillion, three hundred twelve billion, four hundred thirty-one million, forty-two thousand, two hundred forty-three".