11313434440 has 64 divisors (see below), whose sum is σ = 31736396160. Its totient is φ = 3526264320.

The previous prime is 11313434417. The next prime is 11313434459. The reversal of 11313434440 is 4443431311.

It is a happy number.

It is a super-2 number, since 2×11313434440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 11313434399 and 11313434408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1833517 + ... + 1839676.

It is an arithmetic number, because the mean of its divisors is an integer number (495881190).

Almost surely, 2^11313434440 is an apocalyptic number.

11313434440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11313434440 is an abundant number, since it is smaller than the sum of its proper divisors (20422961720).

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

11313434440 is a wasteful number, since it uses less digits than its factorization.

11313434440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673222 (or 3673218 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 11313434440 its reverse (4443431311), we get a palindrome (15756865751).

The spelling of 11313434440 in words is "eleven billion, three hundred thirteen million, four hundred thirty-four thousand, four hundred forty".