1312013303 has 4 divisors (see below), whose sum is σ = 1347473160. Its totient is φ = 1276553448.

The previous prime is 1312013293. The next prime is 1312013321. The reversal of 1312013303 is 3033102131.

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 1312013303 - 2¹⁴ = 1311996919 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 (1312013383) 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, 17729873 + ... + 17729946.

It is an arithmetic number, because the mean of its divisors is an integer number (336868290).

Almost surely, 2^1312013303 is an apocalyptic number.

1312013303 is a deficient number, since it is larger than the sum of its proper divisors (35459857).

1312013303 is an equidigital number, since it uses as much as digits as its factorization.

1312013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35459856.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1312013303 is about 36221.7241859081. The cubic root of 1312013303 is about 1094.7444349817.

Adding to 1312013303 its reverse (3033102131), we get a palindrome (4345115434).

The spelling of 1312013303 in words is "one billion, three hundred twelve million, thirteen thousand, three hundred three".