234531569 has 2 divisors, whose sum is σ = 234531570. Its totient is φ = 234531568.

The previous prime is 234531511. The next prime is 234531587. The reversal of 234531569 is 965135432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193571569 + 40960000 = 13913^2 + 6400^2 .

It is a cyclic number.

It is not a de Polignac number, because 234531569 - 2²⁴ = 217754353 is a prime.

It is a super-2 number, since 2×234531569² = 110010113715203522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (234531599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117265784 + 117265785.

It is an arithmetic number, because the mean of its divisors is an integer number (117265785).

Almost surely, 2^234531569 is an apocalyptic number.

It is an amenable number.

234531569 is a deficient number, since it is larger than the sum of its proper divisors (1).

234531569 is an equidigital number, since it uses as much as digits as its factorization.

234531569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 38.

The square root of 234531569 is about 15314.4235608135. The cubic root of 234531569 is about 616.6902795276.

The spelling of 234531569 in words is "two hundred thirty-four million, five hundred thirty-one thousand, five hundred sixty-nine".