11243231145 has 48 divisors (see below), whose sum is σ = 19898161920. Its totient is φ = 5871460608.

The previous prime is 11243231143. The next prime is 11243231147. The reversal of 11243231145 is 54113234211.

11243231145 is a `hidden beast` number, since 112 + 432 + 3 + 114 + 5 = 666.

11243231145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11243231143) and next prime (11243231147).

It is not a de Polignac number, because 11243231145 - 2¹ = 11243231143 is a prime.

It is a super-2 number, since 2×11243231145² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11243231141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444304 + ... + 468926.

It is an arithmetic number, because the mean of its divisors is an integer number (414545040).

Almost surely, 2^11243231145 is an apocalyptic number.

11243231145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11243231145 is a deficient number, since it is larger than the sum of its proper divisors (8654930775).

11243231145 is a wasteful number, since it uses less digits than its factorization.

11243231145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24846 (or 24843 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 11243231145 its reverse (54113234211), we get a palindrome (65356465356).

The spelling of 11243231145 in words is "eleven billion, two hundred forty-three million, two hundred thirty-one thousand, one hundred forty-five".