11311404144 has 20 divisors (see below), whose sum is σ = 29221127496. Its totient is φ = 3770468032.

The previous prime is 11311404133. The next prime is 11311404157. The reversal of 11311404144 is 44140411311.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117827079 + ... + 117827174.

Almost surely, 2^11311404144 is an apocalyptic number.

It is an amenable number.

11311404144 is an abundant number, since it is smaller than the sum of its proper divisors (17909723352).

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

11311404144 is a wasteful number, since it uses less digits than its factorization.

11311404144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235654264 (or 235654258 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 11311404144 its reverse (44140411311), we get a palindrome (55451815455).

The spelling of 11311404144 in words is "eleven billion, three hundred eleven million, four hundred four thousand, one hundred forty-four".