203223201989 has 2 divisors, whose sum is σ = 203223201990. Its totient is φ = 203223201988.

The previous prime is 203223201977. The next prime is 203223201997. The reversal of 203223201989 is 989102322302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114399532900 + 88823669089 = 338230^2 + 298033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203223201989 is a prime.

It is a super-2 number, since 2×203223201989² (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 (203223201919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101611600994 + 101611600995.

It is an arithmetic number, because the mean of its divisors is an integer number (101611600995).

Almost surely, 2^203223201989 is an apocalyptic number.

It is an amenable number.

203223201989 is a deficient number, since it is larger than the sum of its proper divisors (1).

203223201989 is an equidigital number, since it uses as much as digits as its factorization.

203223201989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 203223201989 in words is "two hundred three billion, two hundred twenty-three million, two hundred one thousand, nine hundred eighty-nine".