381130511 has 2 divisors, whose sum is σ = 381130512. Its totient is φ = 381130510.

The previous prime is 381130471. The next prime is 381130513. The reversal of 381130511 is 115031183.

It is a strong prime.

It is an emirp because it is prime and its reverse (115031183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381130511 - 2²² = 376936207 is a prime.

It is a super-2 number, since 2×381130511² = 290520932830242242, which contains 22 as substring.

Together with 381130513, 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 (381130513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190565255 + 190565256.

It is an arithmetic number, because the mean of its divisors is an integer number (190565256).

Almost surely, 2^381130511 is an apocalyptic number.

381130511 is a deficient number, since it is larger than the sum of its proper divisors (1).

381130511 is an equidigital number, since it uses as much as digits as its factorization.

381130511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 381130511 is about 19522.5641502340. The cubic root of 381130511 is about 725.0332198809.

Adding to 381130511 its reverse (115031183), we get a palindrome (496161694).

The spelling of 381130511 in words is "three hundred eighty-one million, one hundred thirty thousand, five hundred eleven".