11311223004 has 18 divisors (see below), whose sum is σ = 28592258240. Its totient is φ = 3770407656.

The previous prime is 11311222999. The next prime is 11311223041. The reversal of 11311223004 is 40032211311.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 157100284 + ... + 157100355.

Almost surely, 2^11311223004 is an apocalyptic number.

It is an amenable number.

11311223004 is an abundant number, since it is smaller than the sum of its proper divisors (17281035236).

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

11311223004 is a wasteful number, since it uses less digits than its factorization.

11311223004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314200649 (or 314200644 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11311223004 its reverse (40032211311), we get a palindrome (51343434315).

The spelling of 11311223004 in words is "eleven billion, three hundred eleven million, two hundred twenty-three thousand, four".