243230523 has 16 divisors (see below), whose sum is σ = 329668896. Its totient is φ = 159494400.

The previous prime is 243230501. The next prime is 243230567. The reversal of 243230523 is 325032342.

It is not a de Polignac number, because 243230523 - 2⁶ = 243230459 is a prime.

It is a super-2 number, since 2×243230523² = 118322174637707058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243230493 and 243230502.

It is not an unprimeable number, because it can be changed into a prime (243230423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45015 + ... + 50127.

It is an arithmetic number, because the mean of its divisors is an integer number (20604306).

Almost surely, 2^243230523 is an apocalyptic number.

243230523 is a deficient number, since it is larger than the sum of its proper divisors (86438373).

243230523 is a wasteful number, since it uses less digits than its factorization.

243230523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5374.

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 243230523 is about 15595.8495440293. The cubic root of 243230523 is about 624.2224126004. Note that the first 3 decimals are identical.

Adding to 243230523 its reverse (325032342), we get a palindrome (568262865).

The spelling of 243230523 in words is "two hundred forty-three million, two hundred thirty thousand, five hundred twenty-three".