30923933 has 2 divisors, whose sum is σ = 30923934. Its totient is φ = 30923932.

The previous prime is 30923911. The next prime is 30923939. The reversal of 30923933 is 33932903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 3602404 = 5227^2 + 1898^2 .

It is an emirp because it is prime and its reverse (33932903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30923933 - 2¹⁰ = 30922909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30923933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30923939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15461966 + 15461967.

It is an arithmetic number, because the mean of its divisors is an integer number (15461967).

Almost surely, 2^30923933 is an apocalyptic number.

It is an amenable number.

30923933 is a deficient number, since it is larger than the sum of its proper divisors (1).

30923933 is an equidigital number, since it uses as much as digits as its factorization.

30923933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13122, while the sum is 32.

The square root of 30923933 is about 5560.9291489822. The cubic root of 30923933 is about 313.8809135010.

It can be divided in two parts, 309 and 23933, that added together give a palindrome (24242).

The spelling of 30923933 in words is "thirty million, nine hundred twenty-three thousand, nine hundred thirty-three".