11231440004 has 12 divisors (see below), whose sum is σ = 19659011904. Its totient is φ = 5614579464.

The previous prime is 11231439991. The next prime is 11231440009. The reversal of 11231440004 is 40004413211.

It is a super-2 number, since 2×11231440004² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231440009) 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, 262784 + ... + 302519.

It is an arithmetic number, because the mean of its divisors is an integer number (1638250992).

Almost surely, 2^11231440004 is an apocalyptic number.

It is an amenable number.

11231440004 is a deficient number, since it is larger than the sum of its proper divisors (8427571900).

11231440004 is a wasteful number, since it uses less digits than its factorization.

11231440004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570274 (or 570272 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11231440004 its reverse (40004413211), we get a palindrome (51235853215).

The spelling of 11231440004 in words is "eleven billion, two hundred thirty-one million, four hundred forty thousand, four".