11381115 has 8 divisors (see below), whose sum is σ = 18209808. Its totient is φ = 6069920.

The previous prime is 11381101. The next prime is 11381119. The reversal of 11381115 is 51118311.

It is a happy number.

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

It is not a de Polignac number, because 11381115 - 2¹⁰ = 11380091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11381091 and 11381100.

It is not an unprimeable number, because it can be changed into a prime (11381119) 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, 379356 + ... + 379385.

It is an arithmetic number, because the mean of its divisors is an integer number (2276226).

Almost surely, 2^11381115 is an apocalyptic number.

11381115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11381115 is a deficient number, since it is larger than the sum of its proper divisors (6828693).

11381115 is an equidigital number, since it uses as much as digits as its factorization.

11381115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758749.

The product of its digits is 120, while the sum is 21.

The square root of 11381115 is about 3373.5908169190. The cubic root of 11381115 is about 224.9373652816.

Adding to 11381115 its reverse (51118311), we get a palindrome (62499426).

The spelling of 11381115 in words is "eleven million, three hundred eighty-one thousand, one hundred fifteen".