11531105204 has 24 divisors (see below), whose sum is σ = 20914989480. Its totient is φ = 5558253696.

The previous prime is 11531105137. The next prime is 11531105239. The reversal of 11531105204 is 40250113511.

It can be written as a sum of positive squares in 4 ways, for example, as 7260744100 + 4270361104 = 85210^2 + 65348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11531105204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341267 + ... + 373530.

It is an arithmetic number, because the mean of its divisors is an integer number (871457895).

Almost surely, 2^11531105204 is an apocalyptic number.

It is an amenable number.

11531105204 is a deficient number, since it is larger than the sum of its proper divisors (9383884276).

11531105204 is a wasteful number, since it uses less digits than its factorization.

11531105204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714947 (or 714945 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 11531105204 its reverse (40250113511), we get a palindrome (51781218715).

The spelling of 11531105204 in words is "eleven billion, five hundred thirty-one million, one hundred five thousand, two hundred four".