1311100101023 has 4 divisors (see below), whose sum is σ = 1311204976368. Its totient is φ = 1310995225680.

The previous prime is 1311100100969. The next prime is 1311100101029. The reversal of 1311100101023 is 3201010011131.

It is a happy number.

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 1311100101023 - 2¹⁴ = 1311100084639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311100100989 and 1311100101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311100101029) 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, 52418918 + ... + 52443923.

It is an arithmetic number, because the mean of its divisors is an integer number (327801244092).

Almost surely, 2^{1311100101023} is an apocalyptic number.

1311100101023 is a deficient number, since it is larger than the sum of its proper divisors (104875345).

1311100101023 is a wasteful number, since it uses less digits than its factorization.

1311100101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104875344.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1311100101023 its reverse (3201010011131), we get a palindrome (4512110112154).

The spelling of 1311100101023 in words is "one trillion, three hundred eleven billion, one hundred million, one hundred one thousand, twenty-three".