311023112223 has 4 divisors (see below), whose sum is σ = 414697482968. Its totient is φ = 207348741480.

The previous prime is 311023112209. The next prime is 311023112227. The reversal of 311023112223 is 322211320113.

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

It is not a de Polignac number, because 311023112223 - 2⁸ = 311023111967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311023112223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311023112227) 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, 51837185368 + ... + 51837185373.

It is an arithmetic number, because the mean of its divisors is an integer number (103674370742).

Almost surely, 2^311023112223 is an apocalyptic number.

311023112223 is a deficient number, since it is larger than the sum of its proper divisors (103674370745).

311023112223 is a wasteful number, since it uses less digits than its factorization.

311023112223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103674370744.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311023112223 its reverse (322211320113), we get a palindrome (633234432336).

The spelling of 311023112223 in words is "three hundred eleven billion, twenty-three million, one hundred twelve thousand, two hundred twenty-three".