203230053421 has 2 divisors, whose sum is σ = 203230053422. Its totient is φ = 203230053420.

The previous prime is 203230053409. The next prime is 203230053469. The reversal of 203230053421 is 124350032302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 202310144521 + 919908900 = 449789^2 + 30330^2 .

It is a cyclic number.

It is not a de Polignac number, because 203230053421 - 2²⁹ = 202693182509 is a prime.

It is a super-2 number, since 2×203230053421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203230053401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101615026710 + 101615026711.

It is an arithmetic number, because the mean of its divisors is an integer number (101615026711).

Almost surely, 2^203230053421 is an apocalyptic number.

It is an amenable number.

203230053421 is a deficient number, since it is larger than the sum of its proper divisors (1).

203230053421 is an equidigital number, since it uses as much as digits as its factorization.

203230053421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 203230053421 its reverse (124350032302), we get a palindrome (327580085723).

The spelling of 203230053421 in words is "two hundred three billion, two hundred thirty million, fifty-three thousand, four hundred twenty-one".