205400383 has 2 divisors, whose sum is σ = 205400384. Its totient is φ = 205400382.

The previous prime is 205400381. The next prime is 205400407. The reversal of 205400383 is 383004502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205400383 - 2¹ = 205400381 is a prime.

Together with 205400381, it forms a pair of twin primes.

It is equal to p_11361382 and since 205400383 and 11361382 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205400381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102700191 + 102700192.

It is an arithmetic number, because the mean of its divisors is an integer number (102700192).

Almost surely, 2^205400383 is an apocalyptic number.

205400383 is a deficient number, since it is larger than the sum of its proper divisors (1).

205400383 is an equidigital number, since it uses as much as digits as its factorization.

205400383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 205400383 is about 14331.7962237816. The cubic root of 205400383 is about 590.0204752063.

Adding to 205400383 its reverse (383004502), we get a palindrome (588404885).

The spelling of 205400383 in words is "two hundred five million, four hundred thousand, three hundred eighty-three".