2311211031311 has 24 divisors (see below), whose sum is σ = 2860326453600. Its totient is φ = 1828567668096.

The previous prime is 2311211031221. The next prime is 2311211031331. The reversal of 2311211031311 is 1131301121132.

It is not a de Polignac number, because 2311211031311 - 2³⁰ = 2310137289487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311211031331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50075801 + ... + 50121933.

It is an arithmetic number, because the mean of its divisors is an integer number (119180268900).

Almost surely, 2^{2311211031311} is an apocalyptic number.

2311211031311 is a deficient number, since it is larger than the sum of its proper divisors (549115422289).

2311211031311 is a wasteful number, since it uses less digits than its factorization.

2311211031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88515 (or 88502 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 2311211031311 its reverse (1131301121132), we get a palindrome (3442512152443).

The spelling of 2311211031311 in words is "two trillion, three hundred eleven billion, two hundred eleven million, thirty-one thousand, three hundred eleven".