1311110220233 has 4 divisors (see below), whose sum is σ = 1430302058448. Its totient is φ = 1191918382020.

The previous prime is 1311110220193. The next prime is 1311110220247. The reversal of 1311110220233 is 3320220111131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1311110220233 - 2¹⁴ = 1311110203849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1311110220293) 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, 59595919091 + ... + 59595919112.

It is an arithmetic number, because the mean of its divisors is an integer number (357575514612).

Almost surely, 2^{1311110220233} is an apocalyptic number.

It is an amenable number.

1311110220233 is a deficient number, since it is larger than the sum of its proper divisors (119191838215).

1311110220233 is a wasteful number, since it uses less digits than its factorization.

1311110220233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119191838214.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1311110220233 its reverse (3320220111131), we get a palindrome (4631330331364).

The spelling of 1311110220233 in words is "one trillion, three hundred eleven billion, one hundred ten million, two hundred twenty thousand, two hundred thirty-three".