3031042121 has 2 divisors, whose sum is σ = 3031042122. Its totient is φ = 3031042120.

The previous prime is 3031042111. The next prime is 3031042123. The reversal of 3031042121 is 1212401303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2781402121 + 249640000 = 52739^2 + 15800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031042121 is a prime.

It is a Sophie Germain prime.

Together with 3031042123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3031042121.

It is not a weakly prime, because it can be changed into another prime (3031042123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515521060 + 1515521061.

It is an arithmetic number, because the mean of its divisors is an integer number (1515521061).

Almost surely, 2^3031042121 is an apocalyptic number.

It is an amenable number.

3031042121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031042121 is an equidigital number, since it uses as much as digits as its factorization.

3031042121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3031042121 is about 55054.9009716665. The cubic root of 3031042121 is about 1447.2070090073.

Adding to 3031042121 its reverse (1212401303), we get a palindrome (4243443424).

The spelling of 3031042121 in words is "three billion, thirty-one million, forty-two thousand, one hundred twenty-one".