304108381 has 2 divisors, whose sum is σ = 304108382. Its totient is φ = 304108380.

The previous prime is 304108379. The next prime is 304108397. The reversal of 304108381 is 183801403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303944356 + 164025 = 17434^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 304108381 - 2¹ = 304108379 is a prime.

It is a super-2 number, since 2×304108381² = 184963814788882322, which contains 22 as substring.

Together with 304108379, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (304108351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152054190 + 152054191.

It is an arithmetic number, because the mean of its divisors is an integer number (152054191).

Almost surely, 2^304108381 is an apocalyptic number.

It is an amenable number.

304108381 is a deficient number, since it is larger than the sum of its proper divisors (1).

304108381 is an equidigital number, since it uses as much as digits as its factorization.

304108381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 304108381 is about 17438.7035355269. The cubic root of 304108381 is about 672.4749785009.

Adding to 304108381 its reverse (183801403), we get a palindrome (487909784).

It can be divided in two parts, 30 and 4108381, that added together give a triangular number (4108411 = T₂₈₆₆).

The spelling of 304108381 in words is "three hundred four million, one hundred eight thousand, three hundred eighty-one".