30232861 has 2 divisors, whose sum is σ = 30232862. Its totient is φ = 30232860.

The previous prime is 30232859. The next prime is 30232883. The reversal of 30232861 is 16823203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 1610361 = 5350^2 + 1269^2 .

It is an emirp because it is prime and its reverse (16823203) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30232861 - 2¹ = 30232859 is a prime.

Together with 30232859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30232061) 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, 15116430 + 15116431.

It is an arithmetic number, because the mean of its divisors is an integer number (15116431).

Almost surely, 2^30232861 is an apocalyptic number.

It is an amenable number.

30232861 is a deficient number, since it is larger than the sum of its proper divisors (1).

30232861 is an equidigital number, since it uses as much as digits as its factorization.

30232861 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 30232861 is about 5498.4416883332. The cubic root of 30232861 is about 311.5251275047.

The spelling of 30232861 in words is "thirty million, two hundred thirty-two thousand, eight hundred sixty-one".