3113121013 has 4 divisors (see below), whose sum is σ = 3113418508. Its totient is φ = 3112823520.

The previous prime is 3113120993. The next prime is 3113121043. The reversal of 3113121013 is 3101213113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1593446724 + 1519674289 = 39918^2 + 38983^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113121013 - 2¹⁷ = 3112989941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3113121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132456 + ... + 154177.

It is an arithmetic number, because the mean of its divisors is an integer number (778354627).

Almost surely, 2^3113121013 is an apocalyptic number.

It is an amenable number.

3113121013 is a deficient number, since it is larger than the sum of its proper divisors (297495).

3113121013 is a wasteful number, since it uses less digits than its factorization.

3113121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297494.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 3113121013 is about 55795.3493850518. The cubic root of 3113121013 is about 1460.1540171854.

Adding to 3113121013 its reverse (3101213113), we get a palindrome (6214334126).

The spelling of 3113121013 in words is "three billion, one hundred thirteen million, one hundred twenty-one thousand, thirteen".