30040381 has 12 divisors (see below), whose sum is σ = 35540640. Its totient is φ = 25310040.

The previous prime is 30040363. The next prime is 30040397. The reversal of 30040381 is 18304003.

It is not a de Polignac number, because 30040381 - 2⁷ = 30040253 is a prime.

It is a super-2 number, since 2×30040381² = 1804848981250322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040181) 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 in 11 ways as a sum of consecutive naturals, for example, 2305 + ... + 8086.

It is an arithmetic number, because the mean of its divisors is an integer number (2961720).

Almost surely, 2^30040381 is an apocalyptic number.

It is an amenable number.

30040381 is a deficient number, since it is larger than the sum of its proper divisors (5500259).

30040381 is a wasteful number, since it uses less digits than its factorization.

30040381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10464 (or 10457 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30040381 is about 5480.9105995263. The cubic root of 30040381 is about 310.8626027075.

Adding to 30040381 its reverse (18304003), we get a palindrome (48344384).

The spelling of 30040381 in words is "thirty million, forty thousand, three hundred eighty-one".