11531106 has 16 divisors (see below), whose sum is σ = 25624800. Its totient is φ = 3843684.

The previous prime is 11531099. The next prime is 11531111. The reversal of 11531106 is 60113511.

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

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, 106716 + ... + 106823.

It is an arithmetic number, because the mean of its divisors is an integer number (1601550).

Almost surely, 2^11531106 is an apocalyptic number.

11531106 is an abundant number, since it is smaller than the sum of its proper divisors (14093694).

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

11531106 is a wasteful number, since it uses less digits than its factorization.

11531106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213550 (or 213544 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 11531106 is about 3395.7482238823. The cubic root of 11531106 is about 225.9212010246.

Adding to 11531106 its reverse (60113511), we get a palindrome (71644617).

The spelling of 11531106 in words is "eleven million, five hundred thirty-one thousand, one hundred six".