1312313312303 has 4 divisors (see below), whose sum is σ = 1499786642640. Its totient is φ = 1124839981968.

The previous prime is 1312313312287. The next prime is 1312313312327. The reversal of 1312313312303 is 3032133132131.

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 1312313312303 - 2⁴ = 1312313312287 is a prime.

It is a super-2 number, since 2×1312313312303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312313312803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93736665158 + ... + 93736665171.

It is an arithmetic number, because the mean of its divisors is an integer number (374946660660).

Almost surely, 2^{1312313312303} is an apocalyptic number.

1312313312303 is a deficient number, since it is larger than the sum of its proper divisors (187473330337).

1312313312303 is an equidigital number, since it uses as much as digits as its factorization.

1312313312303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187473330336.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1312313312303 its reverse (3032133132131), we get a palindrome (4344446444434).

The spelling of 1312313312303 in words is "one trillion, three hundred twelve billion, three hundred thirteen million, three hundred twelve thousand, three hundred three".