43245231 has 4 divisors (see below), whose sum is σ = 57660312. Its totient is φ = 28830152.

The previous prime is 43245211. The next prime is 43245239. The reversal of 43245231 is 13254234.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43245231 - 2⁵ = 43245199 is a prime.

It is a super-2 number, since 2×43245231² = 3740300008486722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43245239) 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, 7207536 + ... + 7207541.

It is an arithmetic number, because the mean of its divisors is an integer number (14415078).

Almost surely, 2^43245231 is an apocalyptic number.

43245231 is a deficient number, since it is larger than the sum of its proper divisors (14415081).

43245231 is a wasteful number, since it uses less digits than its factorization.

43245231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14415080.

The product of its digits is 2880, while the sum is 24.

The square root of 43245231 is about 6576.1106286315. The cubic root of 43245231 is about 351.0045453588.

Adding to 43245231 its reverse (13254234), we get a palindrome (56499465).

The spelling of 43245231 in words is "forty-three million, two hundred forty-five thousand, two hundred thirty-one".