11531085 has 16 divisors (see below), whose sum is σ = 18615744. Its totient is φ = 6094592.

The previous prime is 11531059. The next prime is 11531099. The reversal of 11531085 is 58013511.

It is a cyclic number.

It is not a de Polignac number, because 11531085 - 2⁶ = 11531021 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1707 + ... + 5096.

It is an arithmetic number, because the mean of its divisors is an integer number (1163484).

Almost surely, 2^11531085 is an apocalyptic number.

11531085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11531085 is a deficient number, since it is larger than the sum of its proper divisors (7084659).

11531085 is a wasteful number, since it uses less digits than its factorization.

11531085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6924.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 11531085 is about 3395.7451317789. The cubic root of 11531085 is about 225.9210638782.

Adding to 11531085 its reverse (58013511), we get a palindrome (69544596).

The spelling of 11531085 in words is "eleven million, five hundred thirty-one thousand, eighty-five".