1311000232303 has 4 divisors (see below), whose sum is σ = 1323027757480. Its totient is φ = 1298972707128.

The previous prime is 1311000232253. The next prime is 1311000232357. The reversal of 1311000232303 is 3032320001131.

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 1311000232303 - 2²⁵ = 1310966677871 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 (1311000932303) 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, 6013762425 + ... + 6013762642.

It is an arithmetic number, because the mean of its divisors is an integer number (330756939370).

Almost surely, 2^{1311000232303} is an apocalyptic number.

1311000232303 is a deficient number, since it is larger than the sum of its proper divisors (12027525177).

1311000232303 is a wasteful number, since it uses less digits than its factorization.

1311000232303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12027525176.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1311000232303 its reverse (3032320001131), we get a palindrome (4343320233434).

The spelling of 1311000232303 in words is "one trillion, three hundred eleven billion, two hundred thirty-two thousand, three hundred three".