30500293 has 2 divisors, whose sum is σ = 30500294. Its totient is φ = 30500292.

The previous prime is 30500279. The next prime is 30500297. The reversal of 30500293 is 39200503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29138404 + 1361889 = 5398^2 + 1167^2 .

It is an emirp because it is prime and its reverse (39200503) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30500293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30500297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15250146 + 15250147.

It is an arithmetic number, because the mean of its divisors is an integer number (15250147).

Almost surely, 2^30500293 is an apocalyptic number.

It is an amenable number.

30500293 is a deficient number, since it is larger than the sum of its proper divisors (1).

30500293 is an equidigital number, since it uses as much as digits as its factorization.

30500293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 30500293 is about 5522.7070355035. The cubic root of 30500293 is about 312.4409889640.

Adding to 30500293 its reverse (39200503), we get a palindrome (69700796).

The spelling of 30500293 in words is "thirty million, five hundred thousand, two hundred ninety-three".