1312134013 has 4 divisors (see below), whose sum is σ = 1312503808. Its totient is φ = 1311764220.

The previous prime is 1312133987. The next prime is 1312134023. The reversal of 1312134013 is 3104312131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312134013 - 2¹⁷ = 1312002941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312134023) 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, 179523 + ... + 186688.

It is an arithmetic number, because the mean of its divisors is an integer number (328125952).

Almost surely, 2^1312134013 is an apocalyptic number.

It is an amenable number.

1312134013 is a deficient number, since it is larger than the sum of its proper divisors (369795).

1312134013 is an equidigital number, since it uses as much as digits as its factorization.

1312134013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369794.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1312134013 is about 36223.3904128258. The cubic root of 1312134013 is about 1094.7780074432.

Adding to 1312134013 its reverse (3104312131), we get a palindrome (4416446144).

The spelling of 1312134013 in words is "one billion, three hundred twelve million, one hundred thirty-four thousand, thirteen".