311133120223 has 4 divisors (see below), whose sum is σ = 311140728360. Its totient is φ = 311125512088.

The previous prime is 311133120161. The next prime is 311133120229. The reversal of 311133120223 is 322021331113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322021331113 = 863 ⋅373141751.

It is a cyclic number.

It is not a de Polignac number, because 311133120223 - 2²⁹ = 310596249311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311133120194 and 311133120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311133120229) 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, 3742393 + ... + 3824626.

It is an arithmetic number, because the mean of its divisors is an integer number (77785182090).

Almost surely, 2^311133120223 is an apocalyptic number.

311133120223 is a deficient number, since it is larger than the sum of its proper divisors (7608137).

311133120223 is an equidigital number, since it uses as much as digits as its factorization.

311133120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7608136.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 311133120223 its reverse (322021331113), we get a palindrome (633154451336).

The spelling of 311133120223 in words is "three hundred eleven billion, one hundred thirty-three million, one hundred twenty thousand, two hundred twenty-three".