243400234 has 16 divisors (see below), whose sum is σ = 455190336. Its totient is φ = 94831200.

The previous prime is 243400181. The next prime is 243400247. The reversal of 243400234 is 432004342.

It is a super-2 number, since 2×243400234² = 118487347822509512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 790107 + ... + 790414.

It is an arithmetic number, because the mean of its divisors is an integer number (28449396).

Almost surely, 2^243400234 is an apocalyptic number.

243400234 is a deficient number, since it is larger than the sum of its proper divisors (211790102).

243400234 is a wasteful number, since it uses less digits than its factorization.

243400234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580541.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 243400234 is about 15601.2894979870. The cubic root of 243400234 is about 624.3675599271.

Adding to 243400234 its reverse (432004342), we get a palindrome (675404576).

The spelling of 243400234 in words is "two hundred forty-three million, four hundred thousand, two hundred thirty-four".