243145432 has 32 divisors (see below), whose sum is σ = 483595200. Its totient is φ = 114285600.

The previous prime is 243145421. The next prime is 243145433. The reversal of 243145432 is 234541342.

It is a happy number.

It is a super-2 number, since 2×243145432² = 118239402204933248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 243145432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243145433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13807 + ... + 26017.

It is an arithmetic number, because the mean of its divisors is an integer number (15112350).

Almost surely, 2^243145432 is an apocalyptic number.

It is an amenable number.

243145432 is a deficient number, since it is larger than the sum of its proper divisors (240449768).

243145432 is a wasteful number, since it uses less digits than its factorization.

243145432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367 (or 12363 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 243145432 is about 15593.1213039596. The cubic root of 243145432 is about 624.1496121095.

Adding to 243145432 its reverse (234541342), we get a palindrome (477686774).

The spelling of 243145432 in words is "two hundred forty-three million, one hundred forty-five thousand, four hundred thirty-two".