11931667 has 4 divisors (see below), whose sum is σ = 13016376. Its totient is φ = 10846960.

The previous prime is 11931613. The next prime is 11931691. The reversal of 11931667 is 76613911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11931667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11931767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542338 + ... + 542359.

It is an arithmetic number, because the mean of its divisors is an integer number (3254094).

Almost surely, 2^11931667 is an apocalyptic number.

11931667 is a deficient number, since it is larger than the sum of its proper divisors (1084709).

11931667 is a wasteful number, since it uses less digits than its factorization.

11931667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084708.

The product of its digits is 6804, while the sum is 34.

The square root of 11931667 is about 3454.2245149961. The cubic root of 11931667 is about 228.5074557018.

The spelling of 11931667 in words is "eleven million, nine hundred thirty-one thousand, six hundred sixty-seven".