1312134403 has 2 divisors, whose sum is σ = 1312134404. Its totient is φ = 1312134402.

The previous prime is 1312134401. The next prime is 1312134419. The reversal of 1312134403 is 3044312131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312134403 - 2¹ = 1312134401 is a prime.

Together with 1312134401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1312134401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656067201 + 656067202.

It is an arithmetic number, because the mean of its divisors is an integer number (656067202).

Almost surely, 2^1312134403 is an apocalyptic number.

1312134403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312134403 is an equidigital number, since it uses as much as digits as its factorization.

1312134403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1312134403 is about 36223.3957960874. The cubic root of 1312134403 is about 1094.7781159086.

Adding to 1312134403 its reverse (3044312131), we get a palindrome (4356446534).

It can be divided in two parts, 13121 and 34403, that added together give a square (47524 = 218²).

The spelling of 1312134403 in words is "one billion, three hundred twelve million, one hundred thirty-four thousand, four hundred three".