3121115 has 16 divisors (see below), whose sum is σ = 4027968. Its totient is φ = 2313216.

The previous prime is 3121109. The next prime is 3121121. The reversal of 3121115 is 5111213.

It is an interprime number because it is at equal distance from previous prime (3121109) and next prime (3121121).

It is a cyclic number.

It is not a de Polignac number, because 3121115 - 2⁶ = 3121051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5954 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (251748).

Almost surely, 2^3121115 is an apocalyptic number.

3121115 is a deficient number, since it is larger than the sum of its proper divisors (906853).

3121115 is a wasteful number, since it uses less digits than its factorization.

3121115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its digits is 30, while the sum is 14.

The square root of 3121115 is about 1766.6677672953. The cubic root of 3121115 is about 146.1402761391.

Adding to 3121115 its reverse (5111213), we get a palindrome (8232328).

The spelling of 3121115 in words is "three million, one hundred twenty-one thousand, one hundred fifteen".