203243102401 has 4 divisors (see below), whose sum is σ = 207077877972. Its totient is φ = 199408326832.

The previous prime is 203243102371. The next prime is 203243102453. The reversal of 203243102401 is 104201342302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104201342302 = 2 ⋅52100671151.

It can be written as a sum of positive squares in 2 ways, for example, as 103298602801 + 99944499600 = 321401^2 + 316140^2 .

It is a cyclic number.

It is not a de Polignac number, because 203243102401 - 2¹¹ = 203243100353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203243109401) 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, 1917387706 + ... + 1917387811.

It is an arithmetic number, because the mean of its divisors is an integer number (51769469493).

Almost surely, 2^203243102401 is an apocalyptic number.

It is an amenable number.

203243102401 is a deficient number, since it is larger than the sum of its proper divisors (3834775571).

203243102401 is an equidigital number, since it uses as much as digits as its factorization.

203243102401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834775570.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 203243102401 its reverse (104201342302), we get a palindrome (307444444703).

The spelling of 203243102401 in words is "two hundred three billion, two hundred forty-three million, one hundred two thousand, four hundred one".