3103398521 has 2 divisors, whose sum is σ = 3103398522. Its totient is φ = 3103398520.

The previous prime is 3103398479. The next prime is 3103398541. The reversal of 3103398521 is 1258933013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2970250000 + 133148521 = 54500^2 + 11539^2 .

It is a cyclic number.

It is not a de Polignac number, because 3103398521 - 2⁶ = 3103398457 is a prime.

It is not a weakly prime, because it can be changed into another prime (3103398541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1551699260 + 1551699261.

It is an arithmetic number, because the mean of its divisors is an integer number (1551699261).

Almost surely, 2^3103398521 is an apocalyptic number.

It is an amenable number.

3103398521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3103398521 is an equidigital number, since it uses as much as digits as its factorization.

3103398521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 3103398521 is about 55708.1548877720. The cubic root of 3103398521 is about 1458.6323780651.

The spelling of 3103398521 in words is "three billion, one hundred three million, three hundred ninety-eight thousand, five hundred twenty-one".