203442023 has 2 divisors, whose sum is σ = 203442024. Its totient is φ = 203442022.

The previous prime is 203442017. The next prime is 203442049. The reversal of 203442023 is 320244302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203442023 - 2⁴ = 203442007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203441986 and 203442004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203442223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101721011 + 101721012.

It is an arithmetic number, because the mean of its divisors is an integer number (101721012).

Almost surely, 2^203442023 is an apocalyptic number.

203442023 is a deficient number, since it is larger than the sum of its proper divisors (1).

203442023 is an equidigital number, since it uses as much as digits as its factorization.

203442023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 203442023 is about 14263.3103801327. The cubic root of 203442023 is about 588.1393292469.

Adding to 203442023 its reverse (320244302), we get a palindrome (523686325).

The spelling of 203442023 in words is "two hundred three million, four hundred forty-two thousand, twenty-three".