1311032323103 has 4 divisors (see below), whose sum is σ = 1316807796120. Its totient is φ = 1305256850088.

The previous prime is 1311032323079. The next prime is 1311032323127. The reversal of 1311032323103 is 3013232301131.

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

It is an interprime number because it is at equal distance from previous prime (1311032323079) and next prime (1311032323127).

It is a cyclic number.

It is not a de Polignac number, because 1311032323103 - 2¹² = 1311032319007 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 (1311032323703) 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, 2887736168 + ... + 2887736621.

It is an arithmetic number, because the mean of its divisors is an integer number (329201949030).

Almost surely, 2^{1311032323103} is an apocalyptic number.

1311032323103 is a deficient number, since it is larger than the sum of its proper divisors (5775473017).

1311032323103 is an equidigital number, since it uses as much as digits as its factorization.

1311032323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775473016.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1311032323103 its reverse (3013232301131), we get a palindrome (4324264624234).

The spelling of 1311032323103 in words is "one trillion, three hundred eleven billion, thirty-two million, three hundred twenty-three thousand, one hundred three".