243225234 has 32 divisors (see below), whose sum is σ = 617715840. Its totient is φ = 69492816.

The previous prime is 243225221. The next prime is 243225247. The reversal of 243225234 is 432522342.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (243225221) and next prime (243225247).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 243225198 and 243225207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321349 + ... + 322104.

It is an arithmetic number, because the mean of its divisors is an integer number (19303620).

Almost surely, 2^243225234 is an apocalyptic number.

243225234 is an abundant number, since it is smaller than the sum of its proper divisors (374490606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243225234 is a wasteful number, since it uses less digits than its factorization.

243225234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643471 (or 643465 counting only the distinct ones).

The product of its digits is 11520, while the sum is 27.

The square root of 243225234 is about 15595.6799787633. The cubic root of 243225234 is about 624.2178880363.

Adding to 243225234 its reverse (432522342), we get a palindrome (675747576).

The spelling of 243225234 in words is "two hundred forty-three million, two hundred twenty-five thousand, two hundred thirty-four".