11691013 has 8 divisors (see below), whose sum is σ = 11871200. Its totient is φ = 11512368.

The previous prime is 11691011. The next prime is 11691037. The reversal of 11691013 is 31019611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11691013 - 2¹ = 11691011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11691011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30658 + ... + 31036.

It is an arithmetic number, because the mean of its divisors is an integer number (1483900).

Almost surely, 2^11691013 is an apocalyptic number.

It is an amenable number.

11691013 is a deficient number, since it is larger than the sum of its proper divisors (180187).

11691013 is a wasteful number, since it uses less digits than its factorization.

11691013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 11691013 is about 3419.2123361967. The cubic root of 11691013 is about 226.9607272909.

The spelling of 11691013 in words is "eleven million, six hundred ninety-one thousand, thirteen".