30939101 has 2 divisors, whose sum is σ = 30939102. Its totient is φ = 30939100.

The previous prime is 30939053. The next prime is 30939107. The reversal of 30939101 is 10193903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28879876 + 2059225 = 5374^2 + 1435^2 .

It is an emirp because it is prime and its reverse (10193903) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30939101 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30939107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15469550 + 15469551.

It is an arithmetic number, because the mean of its divisors is an integer number (15469551).

Almost surely, 2^30939101 is an apocalyptic number.

It is an amenable number.

30939101 is a deficient number, since it is larger than the sum of its proper divisors (1).

30939101 is an equidigital number, since it uses as much as digits as its factorization.

30939101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 30939101 is about 5562.2927826572. The cubic root of 30939101 is about 313.9322240022.

The spelling of 30939101 in words is "thirty million, nine hundred thirty-nine thousand, one hundred one".