3103040021 has 2 divisors, whose sum is σ = 3103040022. Its totient is φ = 3103040020.

The previous prime is 3103039987. The next prime is 3103040027. The reversal of 3103040021 is 1200403013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2181917521 + 921122500 = 46711^2 + 30350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3103040021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3103039978 and 3103040005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3103040027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1551520010 + 1551520011.

It is an arithmetic number, because the mean of its divisors is an integer number (1551520011).

Almost surely, 2^3103040021 is an apocalyptic number.

It is an amenable number.

3103040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3103040021 is an equidigital number, since it uses as much as digits as its factorization.

3103040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3103040021 is about 55704.9371330765. The cubic root of 3103040021 is about 1458.5762095517.

Adding to 3103040021 its reverse (1200403013), we get a palindrome (4303443034).

The spelling of 3103040021 in words is "three billion, one hundred three million, forty thousand, twenty-one".