203020244261 has 4 divisors (see below), whose sum is σ = 203022072000. Its totient is φ = 203018416524.

The previous prime is 203020244249. The next prime is 203020244269. The reversal of 203020244261 is 162442020302.

It is a happy number.

203020244261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203020244261 - 2¹⁸ = 203019982117 is a prime.

It is a super-2 number, since 2×203020244261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203020244261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020244269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735671 + ... + 973268.

It is an arithmetic number, because the mean of its divisors is an integer number (50755518000).

Almost surely, 2^203020244261 is an apocalyptic number.

It is an amenable number.

203020244261 is a deficient number, since it is larger than the sum of its proper divisors (1827739).

203020244261 is a wasteful number, since it uses less digits than its factorization.

203020244261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827738.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 203020244261 its reverse (162442020302), we get a palindrome (365462264563).

The spelling of 203020244261 in words is "two hundred three billion, twenty million, two hundred forty-four thousand, two hundred sixty-one".