1312243403403 has 8 divisors (see below), whose sum is σ = 1779313089600. Its totient is φ = 860001326408.

The previous prime is 1312243403389. The next prime is 1312243403407. The reversal of 1312243403403 is 3043043422131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1312243403403 - 2⁹ = 1312243402891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312243403407) 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, 3706902093 + ... + 3706902446.

It is an arithmetic number, because the mean of its divisors is an integer number (222414136200).

Almost surely, 2^{1312243403403} is an apocalyptic number.

1312243403403 is a deficient number, since it is larger than the sum of its proper divisors (467069686197).

1312243403403 is an equidigital number, since it uses as much as digits as its factorization.

1312243403403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7413804601.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 1312243403403 its reverse (3043043422131), we get a palindrome (4355286825534).

The spelling of 1312243403403 in words is "one trillion, three hundred twelve billion, two hundred forty-three million, four hundred three thousand, four hundred three".