30043381 has 2 divisors, whose sum is σ = 30043382. Its totient is φ = 30043380.

The previous prime is 30043373. The next prime is 30043399. The reversal of 30043381 is 18334003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23126481 + 6916900 = 4809^2 + 2630^2 .

It is a cyclic number.

It is not a de Polignac number, because 30043381 - 2³ = 30043373 is a prime.

It is a super-2 number, since 2×30043381² = 1805209483822322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30043081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15021690 + 15021691.

It is an arithmetic number, because the mean of its divisors is an integer number (15021691).

Almost surely, 2^30043381 is an apocalyptic number.

It is an amenable number.

30043381 is a deficient number, since it is larger than the sum of its proper divisors (1).

30043381 is an equidigital number, since it uses as much as digits as its factorization.

30043381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 30043381 is about 5481.1842698453. The cubic root of 30043381 is about 310.8729505208.

Adding to 30043381 its reverse (18334003), we get a palindrome (48377384).

It can be divided in two parts, 300 and 43381, that added together give a square (43681 = 209²).

The spelling of 30043381 in words is "thirty million, forty-three thousand, three hundred eighty-one".