3113123121 has 6 divisors (see below), whose sum is σ = 4496733410. Its totient is φ = 2075415408.

The previous prime is 3113123119. The next prime is 3113123149. The reversal of 3113123121 is 1213213113.

It can be written as a sum of positive squares in only one way, i.e., 1976691600 + 1136431521 = 44460^2 + 33711^2 .

It is not a de Polignac number, because 3113123121 - 2¹ = 3113123119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3113123094 and 3113123103.

It is not an unprimeable number, because it can be changed into a prime (3113123171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172951276 + ... + 172951293.

Almost surely, 2^3113123121 is an apocalyptic number.

It is an amenable number.

3113123121 is a deficient number, since it is larger than the sum of its proper divisors (1383610289).

3113123121 is a wasteful number, since it uses less digits than its factorization.

3113123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345902575 (or 345902572 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 3113123121 is about 55795.3682755119. The cubic root of 3113123121 is about 1460.1543467586.

Adding to 3113123121 its reverse (1213213113), we get a palindrome (4326336234).

The spelling of 3113123121 in words is "three billion, one hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-one".