11531104 has 48 divisors (see below), whose sum is σ = 24957072. Its totient is φ = 5211648.

The previous prime is 11531099. The next prime is 11531111. The reversal of 11531104 is 40113511.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 21787 + ... + 22309.

It is an arithmetic number, because the mean of its divisors is an integer number (519939).

Almost surely, 2^11531104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11531104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12478536).

11531104 is an abundant number, since it is smaller than the sum of its proper divisors (13425968).

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

11531104 is a wasteful number, since it uses less digits than its factorization.

11531104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11531104 is about 3395.7479293964. The cubic root of 11531104 is about 225.9211879631.

Adding to 11531104 its reverse (40113511), we get a palindrome (51644615).

The spelling of 11531104 in words is "eleven million, five hundred thirty-one thousand, one hundred four".