3103131121 has 2 divisors, whose sum is σ = 3103131122. Its totient is φ = 3103131120.

The previous prime is 3103131113. The next prime is 3103131131. The reversal of 3103131121 is 1211313013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3059306721 + 43824400 = 55311^2 + 6620^2 .

It is a cyclic number.

It is not a de Polignac number, because 3103131121 - 2³ = 3103131113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3103131095 and 3103131104.

It is not a weakly prime, because it can be changed into another prime (3103131131) 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 as a sum of consecutive naturals, namely, 1551565560 + 1551565561.

It is an arithmetic number, because the mean of its divisors is an integer number (1551565561).

Almost surely, 2^3103131121 is an apocalyptic number.

It is an amenable number.

3103131121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3103131121 is an equidigital number, since it uses as much as digits as its factorization.

3103131121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3103131121 is about 55705.7548283838. The cubic root of 3103131121 is about 1458.5904831878.

Adding to 3103131121 its reverse (1211313013), we get a palindrome (4314444134).

The spelling of 3103131121 in words is "three billion, one hundred three million, one hundred thirty-one thousand, one hundred twenty-one".