11011431204 has 36 divisors (see below), whose sum is σ = 28094595984. Its totient is φ = 3636172272.

The previous prime is 11011431187. The next prime is 11011431253. The reversal of 11011431204 is 40213411011.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1425462 + ... + 1433165.

It is an arithmetic number, because the mean of its divisors is an integer number (780405444).

Almost surely, 2^11011431204 is an apocalyptic number.

It is an amenable number.

11011431204 is an abundant number, since it is smaller than the sum of its proper divisors (17083164780).

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

11011431204 is a wasteful number, since it uses less digits than its factorization.

11011431204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858744 (or 2858739 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11011431204 its reverse (40213411011), we get a palindrome (51224842215).

The spelling of 11011431204 in words is "eleven billion, eleven million, four hundred thirty-one thousand, two hundred four".