30604813 has 2 divisors, whose sum is σ = 30604814. Its totient is φ = 30604812.

The previous prime is 30604799. The next prime is 30604817. The reversal of 30604813 is 31840603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17623204 + 12981609 = 4198^2 + 3603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30604813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30604817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15302406 + 15302407.

It is an arithmetic number, because the mean of its divisors is an integer number (15302407).

Almost surely, 2^30604813 is an apocalyptic number.

It is an amenable number.

30604813 is a deficient number, since it is larger than the sum of its proper divisors (1).

30604813 is an equidigital number, since it uses as much as digits as its factorization.

30604813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 30604813 is about 5532.1616932263. The cubic root of 30604813 is about 312.7974784379.

The spelling of 30604813 in words is "thirty million, six hundred four thousand, eight hundred thirteen".