11231115 has 16 divisors (see below), whose sum is σ = 20537088. Its totient is φ = 5134176.

The previous prime is 11231111. The next prime is 11231119. The reversal of 11231115 is 51113211.

It is an interprime number because it is at equal distance from previous prime (11231111) and next prime (11231119).

It is not a de Polignac number, because 11231115 - 2² = 11231111 is a prime.

It is a super-2 number, since 2×11231115² = 252275888286450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 11231094 and 11231103.

It is not an unprimeable number, because it can be changed into a prime (11231111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53377 + ... + 53586.

It is an arithmetic number, because the mean of its divisors is an integer number (1283568).

Almost surely, 2^11231115 is an apocalyptic number.

11231115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11231115 is a deficient number, since it is larger than the sum of its proper divisors (9305973).

11231115 is a wasteful number, since it uses less digits than its factorization.

11231115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106978.

The product of its digits is 30, while the sum is 15.

The square root of 11231115 is about 3351.2855742237. The cubic root of 11231115 is about 223.9447873593.

Adding to 11231115 its reverse (51113211), we get a palindrome (62344326).

The spelling of 11231115 in words is "eleven million, two hundred thirty-one thousand, one hundred fifteen".