3031121 has 2 divisors, whose sum is σ = 3031122. Its totient is φ = 3031120.

The previous prime is 3031103. The next prime is 3031129. The reversal of 3031121 is 1211303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2070721 + 960400 = 1439^2 + 980^2 .

It is an emirp because it is prime and its reverse (1211303) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3031121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3031129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515560 + 1515561.

It is an arithmetic number, because the mean of its divisors is an integer number (1515561).

Almost surely, 2^3031121 is an apocalyptic number.

It is an amenable number.

3031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3031121 is an equidigital number, since it uses as much as digits as its factorization.

3031121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 3031121 is about 1741.0114876129. The cubic root of 3031121 is about 144.7219562803.

Adding to 3031121 its reverse (1211303), we get a palindrome (4242424).

The spelling of 3031121 in words is "three million, thirty-one thousand, one hundred twenty-one".