2311213443 has 64 divisors (see below), whose sum is σ = 4028424192. Its totient is φ = 1142887680.

The previous prime is 2311213417. The next prime is 2311213451. The reversal of 2311213443 is 3443121132.

It is a happy number.

It is not a de Polignac number, because 2311213443 - 2⁶ = 2311213379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2311213403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1236996 + ... + 1238862.

It is an arithmetic number, because the mean of its divisors is an integer number (62944128).

Almost surely, 2^2311213443 is an apocalyptic number.

2311213443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2311213443 is a deficient number, since it is larger than the sum of its proper divisors (1717210749).

2311213443 is a wasteful number, since it uses less digits than its factorization.

2311213443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its digits is 1728, while the sum is 24.

The square root of 2311213443 is about 48075.0813103837. The cubic root of 2311213443 is about 1322.1478353293.

Adding to 2311213443 its reverse (3443121132), we get a palindrome (5754334575).

The spelling of 2311213443 in words is "two billion, three hundred eleven million, two hundred thirteen thousand, four hundred forty-three".