2311103243 has 4 divisors (see below), whose sum is σ = 2311533288. Its totient is φ = 2310673200.

The previous prime is 2311103239. The next prime is 2311103251. The reversal of 2311103243 is 3423011132.

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

It is a cyclic number.

It is not a de Polignac number, because 2311103243 - 2² = 2311103239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311103203) 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, 206858 + ... + 217743.

It is an arithmetic number, because the mean of its divisors is an integer number (577883322).

Almost surely, 2^2311103243 is an apocalyptic number.

2311103243 is a deficient number, since it is larger than the sum of its proper divisors (430045).

2311103243 is an equidigital number, since it uses as much as digits as its factorization.

2311103243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430044.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2311103243 is about 48073.9351728148. The cubic root of 2311103243 is about 1322.1268214029.

Adding to 2311103243 its reverse (3423011132), we get a palindrome (5734114375).

The spelling of 2311103243 in words is "two billion, three hundred eleven million, one hundred three thousand, two hundred forty-three".