1331115 has 8 divisors (see below), whose sum is σ = 2129808. Its totient is φ = 709920.

The previous prime is 1331107. The next prime is 1331119. The reversal of 1331115 is 5111331.

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

It is not a de Polignac number, because 1331115 - 2³ = 1331107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 88741 = 1331115 / (1 + 3 + 3 + 1 + 1 + 1 + 5).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1331094 and 1331103.

It is not an unprimeable number, because it can be changed into a prime (1331119) 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, 44356 + ... + 44385.

It is an arithmetic number, because the mean of its divisors is an integer number (266226).

2^1331115 is an apocalyptic number.

1331115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1331115 is a deficient number, since it is larger than the sum of its proper divisors (798693).

1331115 is an equidigital number, since it uses as much as digits as its factorization.

1331115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88749.

The product of its digits is 45, while the sum is 15.

The square root of 1331115 is about 1153.7395720005. The cubic root of 1331115 is about 110.0031679528.

Adding to 1331115 its reverse (5111331), we get a palindrome (6442446).

The spelling of 1331115 in words is "one million, three hundred thirty-one thousand, one hundred fifteen".