383138311 has 2 divisors, whose sum is σ = 383138312. Its totient is φ = 383138310.

The previous prime is 383138309. The next prime is 383138369. The reversal of 383138311 is 113831383.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 383138311 - 2¹ = 383138309 is a prime.

Together with 383138309, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (383138381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191569155 + 191569156.

It is an arithmetic number, because the mean of its divisors is an integer number (191569156).

Almost surely, 2^383138311 is an apocalyptic number.

383138311 is a deficient number, since it is larger than the sum of its proper divisors (1).

383138311 is an equidigital number, since it uses as much as digits as its factorization.

383138311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 383138311 is about 19573.9191527910. The cubic root of 383138311 is about 726.3041518925.

Adding to 383138311 its reverse (113831383), we get a palindrome (496969694).

The spelling of 383138311 in words is "three hundred eighty-three million, one hundred thirty-eight thousand, three hundred eleven".