11243231313 has 4 divisors (see below), whose sum is σ = 14990975088. Its totient is φ = 7495487540.

The previous prime is 11243231309. The next prime is 11243231339. The reversal of 11243231313 is 31313234211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11243231313 - 2² = 11243231309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11243231353) 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, 1873871883 + ... + 1873871888.

It is an arithmetic number, because the mean of its divisors is an integer number (3747743772).

Almost surely, 2^11243231313 is an apocalyptic number.

It is an amenable number.

11243231313 is a deficient number, since it is larger than the sum of its proper divisors (3747743775).

11243231313 is an equidigital number, since it uses as much as digits as its factorization.

11243231313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3747743774.

The product of its digits is 1296, while the sum is 24.

Adding to 11243231313 its reverse (31313234211), we get a palindrome (42556465524).

It can be divided in two parts, 11243 and 231313, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 11243231313 in words is "eleven billion, two hundred forty-three million, two hundred thirty-one thousand, three hundred thirteen".