30097381 has 4 divisors (see below), whose sum is σ = 30327264. Its totient is φ = 29867500.

The previous prime is 30097367. The next prime is 30097399. The reversal of 30097381 is 18379003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30097381 - 2¹¹ = 30095333 is a prime.

It is a super-2 number, since 2×30097381² = 1811704686118322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30097351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114745 + ... + 115006.

It is an arithmetic number, because the mean of its divisors is an integer number (7581816).

Almost surely, 2^30097381 is an apocalyptic number.

It is an amenable number.

30097381 is a deficient number, since it is larger than the sum of its proper divisors (229883).

30097381 is a wasteful number, since it uses less digits than its factorization.

30097381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229882.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 30097381 is about 5486.1080011243. The cubic root of 30097381 is about 311.0590934810.

The spelling of 30097381 in words is "thirty million, ninety-seven thousand, three hundred eighty-one".