11709131 has 16 divisors (see below), whose sum is σ = 14019264. Its totient is φ = 9569664.

The previous prime is 11709119. The next prime is 11709151. The reversal of 11709131 is 13190711.

It is a cyclic number.

It is not a de Polignac number, because 11709131 - 2¹⁰ = 11708107 is a prime.

It is a super-2 number, since 2×11709131² = 274207497550322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11709097 and 11709106.

It is not an unprimeable number, because it can be changed into a prime (11709101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13301 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (876204).

Almost surely, 2^11709131 is an apocalyptic number.

11709131 is a deficient number, since it is larger than the sum of its proper divisors (2310133).

11709131 is an equidigital number, since it uses as much as digits as its factorization.

11709131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 11709131 is about 3421.8607511119. The cubic root of 11709131 is about 227.0779099529.

Adding to 11709131 its reverse (13190711), we get a palindrome (24899842).

It can be divided in two parts, 1170 and 9131, that added together give a palindrome (10301).

The spelling of 11709131 in words is "eleven million, seven hundred nine thousand, one hundred thirty-one".