1312512430403 has 4 divisors (see below), whose sum is σ = 1312518685200. Its totient is φ = 1312506175608.

The previous prime is 1312512430357. The next prime is 1312512430409. The reversal of 1312512430403 is 3040342152131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312512430403 - 2²⁰ = 1312511381827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312512430409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2801303 + ... + 3236096.

It is an arithmetic number, because the mean of its divisors is an integer number (328129671300).

Almost surely, 2^{1312512430403} is an apocalyptic number.

1312512430403 is a deficient number, since it is larger than the sum of its proper divisors (6254797).

1312512430403 is an equidigital number, since it uses as much as digits as its factorization.

1312512430403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254796.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 1312512430403 its reverse (3040342152131), we get a palindrome (4352854582534).

The spelling of 1312512430403 in words is "one trillion, three hundred twelve billion, five hundred twelve million, four hundred thirty thousand, four hundred three".