30905113 has 2 divisors, whose sum is σ = 30905114. Its totient is φ = 30905112.

The previous prime is 30905107. The next prime is 30905129. The reversal of 30905113 is 31150903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20684304 + 10220809 = 4548^2 + 3197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30905113 is a prime.

It is not a weakly prime, because it can be changed into another prime (30905143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15452556 + 15452557.

It is an arithmetic number, because the mean of its divisors is an integer number (15452557).

Almost surely, 2^30905113 is an apocalyptic number.

It is an amenable number.

30905113 is a deficient number, since it is larger than the sum of its proper divisors (1).

30905113 is an equidigital number, since it uses as much as digits as its factorization.

30905113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 30905113 is about 5559.2367281849. The cubic root of 30905113 is about 313.8172256387.

The spelling of 30905113 in words is "thirty million, nine hundred five thousand, one hundred thirteen".