2311111213 has 8 divisors (see below), whose sum is σ = 2372274432. Its totient is φ = 2250447696.

The previous prime is 2311111211. The next prime is 2311111241. The reversal of 2311111213 is 3121111132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2311111213 - 2¹ = 2311111211 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 (2311111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115545 + ... + 134062.

It is an arithmetic number, because the mean of its divisors is an integer number (296534304).

Almost surely, 2^2311111213 is an apocalyptic number.

It is an amenable number.

2311111213 is a deficient number, since it is larger than the sum of its proper divisors (61163219).

2311111213 is a wasteful number, since it uses less digits than its factorization.

2311111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249851.

The product of its digits is 36, while the sum is 16.

The square root of 2311111213 is about 48074.0180658950. The cubic root of 2311111213 is about 1322.1283412165.

Adding to 2311111213 its reverse (3121111132), we get a palindrome (5432222345).

It can be divided in two parts, 231111 and 1213, that added together give a square (232324 = 482²).

The spelling of 2311111213 in words is "two billion, three hundred eleven million, one hundred eleven thousand, two hundred thirteen".