3031020121 has 2 divisors, whose sum is σ = 3031020122. Its totient is φ = 3031020120.

The previous prime is 3031020119. The next prime is 3031020191. The reversal of 3031020121 is 1210201303.

3031020121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2179022400 + 851997721 = 46680^2 + 29189^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031020121 - 2¹ = 3031020119 is a prime.

Together with 3031020119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3031020101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515510060 + 1515510061.

It is an arithmetic number, because the mean of its divisors is an integer number (1515510061).

Almost surely, 2^3031020121 is an apocalyptic number.

It is an amenable number.

3031020121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031020121 is an equidigital number, since it uses as much as digits as its factorization.

3031020121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 3031020121 is about 55054.7011707447. The cubic root of 3031020121 is about 1447.2035076118.

Adding to 3031020121 its reverse (1210201303), we get a palindrome (4241221424).

The spelling of 3031020121 in words is "three billion, thirty-one million, twenty thousand, one hundred twenty-one".