30040237 has 2 divisors, whose sum is σ = 30040238. Its totient is φ = 30040236.

The previous prime is 30040229. The next prime is 30040253. The reversal of 30040237 is 73204003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 2802276 = 5219^2 + 1674^2 .

It is an emirp because it is prime and its reverse (73204003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30040237 - 2³ = 30040229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30040217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15020118 + 15020119.

It is an arithmetic number, because the mean of its divisors is an integer number (15020119).

Almost surely, 2^30040237 is an apocalyptic number.

It is an amenable number.

30040237 is a deficient number, since it is larger than the sum of its proper divisors (1).

30040237 is an equidigital number, since it uses as much as digits as its factorization.

30040237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 30040237 is about 5480.8974630073. The cubic root of 30040237 is about 310.8621059951.

The spelling of 30040237 in words is "thirty million, forty thousand, two hundred thirty-seven".