311440042011023 has 4 divisors (see below), whose sum is σ = 311441088438120. Its totient is φ = 311438995583928.

The previous prime is 311440042011011. The next prime is 311440042011031. The reversal of 311440042011023 is 320110240044113.

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 311440042011023 - 2²⁰ = 311440040962447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311440042010983 and 311440042011001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311440042010023) 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, 522766988 + ... + 523362401.

It is an arithmetic number, because the mean of its divisors is an integer number (77860272109530).

Almost surely, 2^{311440042011023} is an apocalyptic number.

311440042011023 is a deficient number, since it is larger than the sum of its proper divisors (1046427097).

311440042011023 is a wasteful number, since it uses less digits than its factorization.

311440042011023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046427096.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 311440042011023 its reverse (320110240044113), we get a palindrome (631550282055136).

The spelling of 311440042011023 in words is "three hundred eleven trillion, four hundred forty billion, forty-two million, eleven thousand, twenty-three".