203062421353 has 4 divisors (see below), whose sum is σ = 221522641488. Its totient is φ = 184602201220.

The previous prime is 203062421347. The next prime is 203062421377. The reversal of 203062421353 is 353124260302.

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 a de Polignac number, because none of the positive numbers 2^k-203062421353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203062421953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9230110051 + ... + 9230110072.

It is an arithmetic number, because the mean of its divisors is an integer number (55380660372).

Almost surely, 2^203062421353 is an apocalyptic number.

It is an amenable number.

203062421353 is a deficient number, since it is larger than the sum of its proper divisors (18460220135).

203062421353 is a wasteful number, since it uses less digits than its factorization.

203062421353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18460220134.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 203062421353 its reverse (353124260302), we get a palindrome (556186681655).

The spelling of 203062421353 in words is "two hundred three billion, sixty-two million, four hundred twenty-one thousand, three hundred fifty-three".