311331101200023 has 4 divisors (see below), whose sum is σ = 415108134933368. Its totient is φ = 207554067466680.

The previous prime is 311331101199983. The next prime is 311331101200103. The reversal of 311331101200023 is 320002101133113.

It is a happy number.

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

It is not a de Polignac number, because 311331101200023 - 2¹² = 311331101195927 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 (311331101200523) 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, 51888516866668 + ... + 51888516866673.

It is an arithmetic number, because the mean of its divisors is an integer number (103777033733342).

Almost surely, 2^{311331101200023} is an apocalyptic number.

311331101200023 is a deficient number, since it is larger than the sum of its proper divisors (103777033733345).

311331101200023 is a wasteful number, since it uses less digits than its factorization.

311331101200023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103777033733344.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311331101200023 its reverse (320002101133113), we get a palindrome (631333202333136).

The spelling of 311331101200023 in words is "three hundred eleven trillion, three hundred thirty-one billion, one hundred one million, two hundred thousand, twenty-three".