1311302234111 has 4 divisors (see below), whose sum is σ = 1336043785752. Its totient is φ = 1286560682472.

The previous prime is 1311302234069. The next prime is 1311302234131. The reversal of 1311302234111 is 1114322031131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311302234111 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 (1311302234131) 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, 12370775741 + ... + 12370775846.

It is an arithmetic number, because the mean of its divisors is an integer number (334010946438).

Almost surely, 2^{1311302234111} is an apocalyptic number.

1311302234111 is a deficient number, since it is larger than the sum of its proper divisors (24741551641).

1311302234111 is an equidigital number, since it uses as much as digits as its factorization.

1311302234111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24741551640.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 1311302234111 its reverse (1114322031131), we get a palindrome (2425624265242).

The spelling of 1311302234111 in words is "one trillion, three hundred eleven billion, three hundred two million, two hundred thirty-four thousand, one hundred eleven".