203453123 has 2 divisors, whose sum is σ = 203453124. Its totient is φ = 203453122.

The previous prime is 203453069. The next prime is 203453143. The reversal of 203453123 is 321354302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203453123 - 2¹⁰ = 203452099 is a prime.

It is not a weakly prime, because it can be changed into another prime (203453143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101726561 + 101726562.

It is an arithmetic number, because the mean of its divisors is an integer number (101726562).

Almost surely, 2^203453123 is an apocalyptic number.

203453123 is a deficient number, since it is larger than the sum of its proper divisors (1).

203453123 is an equidigital number, since it uses as much as digits as its factorization.

203453123 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 203453123 is about 14263.6994850565. The cubic root of 203453123 is about 588.1500255421.

The spelling of 203453123 in words is "two hundred three million, four hundred fifty-three thousand, one hundred twenty-three".