234425209 has 4 divisors (see below), whose sum is σ = 234567504. Its totient is φ = 234282916.

The previous prime is 234425203. The next prime is 234425267. The reversal of 234425209 is 902524432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234425209 - 2¹³ = 234417017 is a prime.

It is a super-2 number, since 2×234425209² = 109910357229387362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (234425203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68647 + ... + 71980.

It is an arithmetic number, because the mean of its divisors is an integer number (58641876).

Almost surely, 2^234425209 is an apocalyptic number.

It is an amenable number.

234425209 is a deficient number, since it is larger than the sum of its proper divisors (142295).

234425209 is a wasteful number, since it uses less digits than its factorization.

234425209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142294.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 234425209 is about 15310.9506236550. The cubic root of 234425209 is about 616.5970424763.

It can be divided in two parts, 23442 and 5209, that multiplied together give a triangular number (122109378 = T₁₅₆₂₇).

The spelling of 234425209 in words is "two hundred thirty-four million, four hundred twenty-five thousand, two hundred nine".