203381393 has 2 divisors, whose sum is σ = 203381394. Its totient is φ = 203381392.

The previous prime is 203381371. The next prime is 203381401. The reversal of 203381393 is 393183302.

203381393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191075329 + 12306064 = 13823^2 + 3508^2 .

It is a cyclic number.

It is not a de Polignac number, because 203381393 - 2¹⁰ = 203380369 is a prime.

It is not a weakly prime, because it can be changed into another prime (203381333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101690696 + 101690697.

It is an arithmetic number, because the mean of its divisors is an integer number (101690697).

Almost surely, 2^203381393 is an apocalyptic number.

It is an amenable number.

203381393 is a deficient number, since it is larger than the sum of its proper divisors (1).

203381393 is an equidigital number, since it uses as much as digits as its factorization.

203381393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 203381393 is about 14261.1848385749. The cubic root of 203381393 is about 588.0808974802.

The spelling of 203381393 in words is "two hundred three million, three hundred eighty-one thousand, three hundred ninety-three".