3113533121 has 4 divisors (see below), whose sum is σ = 3185940912. Its totient is φ = 3041125332.

The previous prime is 3113533117. The next prime is 3113533123. The reversal of 3113533121 is 1213353113.

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 a cyclic number.

It is not a de Polignac number, because 3113533121 - 2² = 3113533117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3113533123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36203831 + ... + 36203916.

It is an arithmetic number, because the mean of its divisors is an integer number (796485228).

Almost surely, 2^3113533121 is an apocalyptic number.

It is an amenable number.

3113533121 is a deficient number, since it is larger than the sum of its proper divisors (72407791).

3113533121 is an equidigital number, since it uses as much as digits as its factorization.

3113533121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72407790.

The product of its digits is 810, while the sum is 23.

The square root of 3113533121 is about 55799.0422946487. The cubic root of 3113533121 is about 1460.2184449840.

Adding to 3113533121 its reverse (1213353113), we get a palindrome (4326886234).

The spelling of 3113533121 in words is "three billion, one hundred thirteen million, five hundred thirty-three thousand, one hundred twenty-one".