11131420344 has 64 divisors (see below), whose sum is σ = 32144221440. Its totient is φ = 3174735360.

The previous prime is 11131420343. The next prime is 11131420411. The reversal of 11131420344 is 44302413111.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131420343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235644 + ... + 1244619.

It is an arithmetic number, because the mean of its divisors is an integer number (502253460).

Almost surely, 2^11131420344 is an apocalyptic number.

It is an amenable number.

11131420344 is an abundant number, since it is smaller than the sum of its proper divisors (21012801096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131420344 is a wasteful number, since it uses less digits than its factorization.

11131420344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480300 (or 2480296 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 11131420344 its reverse (44302413111), we get a palindrome (55433833455).

The spelling of 11131420344 in words is "eleven billion, one hundred thirty-one million, four hundred twenty thousand, three hundred forty-four".