203240069 has 2 divisors, whose sum is σ = 203240070. Its totient is φ = 203240068.

The previous prime is 203240047. The next prime is 203240087. The reversal of 203240069 is 960042302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198669025 + 4571044 = 14095^2 + 2138^2 .

It is a cyclic number.

It is not a de Polignac number, because 203240069 - 2¹⁶ = 203174533 is a prime.

It is a super-2 number, since 2×203240069² = 82613051294249522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203240969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101620034 + 101620035.

It is an arithmetic number, because the mean of its divisors is an integer number (101620035).

Almost surely, 2^203240069 is an apocalyptic number.

It is an amenable number.

203240069 is a deficient number, since it is larger than the sum of its proper divisors (1).

203240069 is an equidigital number, since it uses as much as digits as its factorization.

203240069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 203240069 is about 14256.2291297524. The cubic root of 203240069 is about 587.9446523019.

The spelling of 203240069 in words is "two hundred three million, two hundred forty thousand, sixty-nine".