203434442051 has 4 divisors (see below), whose sum is σ = 203515140504. Its totient is φ = 203353743600.

The previous prime is 203434442041. The next prime is 203434442083. The reversal of 203434442051 is 150244434302.

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 203434442051 - 2¹⁰ = 203434441027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203434441999 and 203434442017.

It is not an unprimeable number, because it can be changed into a prime (203434442041) 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, 40345445 + ... + 40350486.

It is an arithmetic number, because the mean of its divisors is an integer number (50878785126).

Almost surely, 2^203434442051 is an apocalyptic number.

203434442051 is a deficient number, since it is larger than the sum of its proper divisors (80698453).

203434442051 is an equidigital number, since it uses as much as digits as its factorization.

203434442051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80698452.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 203434442051 its reverse (150244434302), we get a palindrome (353678876353).

The spelling of 203434442051 in words is "two hundred three billion, four hundred thirty-four million, four hundred forty-two thousand, fifty-one".