203920120203 has 4 divisors (see below), whose sum is σ = 271893493608. Its totient is φ = 135946746800.

The previous prime is 203920120181. The next prime is 203920120241. The reversal of 203920120203 is 302021029302.

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 203920120203 - 2⁵ = 203920120171 is a prime.

It is a super-2 number, since 2×203920120203² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203920120253) 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, 33986686698 + ... + 33986686703.

It is an arithmetic number, because the mean of its divisors is an integer number (67973373402).

Almost surely, 2^203920120203 is an apocalyptic number.

203920120203 is a deficient number, since it is larger than the sum of its proper divisors (67973373405).

203920120203 is an equidigital number, since it uses as much as digits as its factorization.

203920120203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67973373404.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 203920120203 its reverse (302021029302), we get a palindrome (505941149505).

The spelling of 203920120203 in words is "two hundred three billion, nine hundred twenty million, one hundred twenty thousand, two hundred three".