3121113 has 4 divisors (see below), whose sum is σ = 4161488. Its totient is φ = 2080740.

The previous prime is 3121109. The next prime is 3121121. The reversal of 3121113 is 3111213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3121113 - 2² = 3121109 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520183 + ... + 520188.

It is an arithmetic number, because the mean of its divisors is an integer number (1040372).

Almost surely, 2^3121113 is an apocalyptic number.

It is an amenable number.

3121113 is a deficient number, since it is larger than the sum of its proper divisors (1040375).

3121113 is a wasteful number, since it uses less digits than its factorization.

3121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040374.

The product of its digits is 18, while the sum is 12.

The square root of 3121113 is about 1766.6672012578. The cubic root of 3121113 is about 146.1402449237.

Adding to 3121113 its reverse (3111213), we get a palindrome (6232326).

The spelling of 3121113 in words is "three million, one hundred twenty-one thousand, one hundred thirteen".