3115204121 has 2 divisors, whose sum is σ = 3115204122. Its totient is φ = 3115204120.

The previous prime is 3115204097. The next prime is 3115204171. The reversal of 3115204121 is 1214025113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3114867721 + 336400 = 55811^2 + 580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3115204121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3115204093 and 3115204102.

It is not a weakly prime, because it can be changed into another prime (3115204171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557602060 + 1557602061.

It is an arithmetic number, because the mean of its divisors is an integer number (1557602061).

Almost surely, 2^3115204121 is an apocalyptic number.

It is an amenable number.

3115204121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115204121 is an equidigital number, since it uses as much as digits as its factorization.

3115204121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 3115204121 is about 55814.0136614453. The cubic root of 3115204121 is about 1460.4796261508.

Adding to 3115204121 its reverse (1214025113), we get a palindrome (4329229234).

The spelling of 3115204121 in words is "three billion, one hundred fifteen million, two hundred four thousand, one hundred twenty-one".