11307891 has 8 divisors (see below), whose sum is σ = 17231104. Its totient is φ = 6461640.

The previous prime is 11307887. The next prime is 11307893. The reversal of 11307891 is 19870311.

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

It is not a de Polignac number, because 11307891 - 2² = 11307887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11307893) 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 7 ways as a sum of consecutive naturals, for example, 269215 + ... + 269256.

It is an arithmetic number, because the mean of its divisors is an integer number (2153888).

Almost surely, 2^11307891 is an apocalyptic number.

11307891 is a deficient number, since it is larger than the sum of its proper divisors (5923213).

11307891 is an equidigital number, since it uses as much as digits as its factorization.

11307891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538481.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 11307891 is about 3362.7207734214. The cubic root of 11307891 is about 224.4539251315.

The spelling of 11307891 in words is "eleven million, three hundred seven thousand, eight hundred ninety-one".