11131528 has 8 divisors (see below), whose sum is σ = 20871630. Its totient is φ = 5565760.

The previous prime is 11131507. The next prime is 11131543. The reversal of 11131528 is 82513111.

It can be written as a sum of positive squares in only one way, i.e., 6543364 + 4588164 = 2558^2 + 2142^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11131528² = 247821831229568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11131499 and 11131508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695713 + ... + 695728.

Almost surely, 2^11131528 is an apocalyptic number.

It is an amenable number.

11131528 is a deficient number, since it is larger than the sum of its proper divisors (9740102).

11131528 is a wasteful number, since it uses less digits than its factorization.

11131528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391447 (or 1391443 counting only the distinct ones).

The product of its digits is 240, while the sum is 22.

The square root of 11131528 is about 3336.3944610912. The cubic root of 11131528 is about 223.2809104452.

Adding to 11131528 its reverse (82513111), we get a palindrome (93644639).

The spelling of 11131528 in words is "eleven million, one hundred thirty-one thousand, five hundred twenty-eight".