203145323 has 2 divisors, whose sum is σ = 203145324. Its totient is φ = 203145322.

The previous prime is 203145301. The next prime is 203145347. The reversal of 203145323 is 323541302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203145323 - 2¹⁶ = 203079787 is a prime.

It is not a weakly prime, because it can be changed into another prime (203145923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101572661 + 101572662.

It is an arithmetic number, because the mean of its divisors is an integer number (101572662).

Almost surely, 2^203145323 is an apocalyptic number.

203145323 is a deficient number, since it is larger than the sum of its proper divisors (1).

203145323 is an equidigital number, since it uses as much as digits as its factorization.

203145323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 203145323 is about 14252.9057739115. The cubic root of 203145323 is about 587.8532758610.

Adding to 203145323 its reverse (323541302), we get a palindrome (526686625).

The spelling of 203145323 in words is "two hundred three million, one hundred forty-five thousand, three hundred twenty-three".