203454120203 has 4 divisors (see below), whose sum is σ = 203520851400. Its totient is φ = 203387389008.

The previous prime is 203454120187. The next prime is 203454120323. The reversal of 203454120203 is 302021454302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203454120203 - 2⁴ = 203454120187 is a prime.

It is a super-2 number, since 2×203454120203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203454120403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33361025 + ... + 33367122.

It is an arithmetic number, because the mean of its divisors is an integer number (50880212850).

Almost surely, 2^203454120203 is an apocalyptic number.

203454120203 is a deficient number, since it is larger than the sum of its proper divisors (66731197).

203454120203 is an equidigital number, since it uses as much as digits as its factorization.

203454120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66731196.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 203454120203 its reverse (302021454302), we get a palindrome (505475574505).

The spelling of 203454120203 in words is "two hundred three billion, four hundred fifty-four million, one hundred twenty thousand, two hundred three".