243400532 has 6 divisors (see below), whose sum is σ = 425950938. Its totient is φ = 121700264.

The previous prime is 243400529. The next prime is 243400579. The reversal of 243400532 is 235004342.

It can be written as a sum of positive squares in only one way, i.e., 181872196 + 61528336 = 13486^2 + 7844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243400498 and 243400507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30425063 + ... + 30425070.

It is an arithmetic number, because the mean of its divisors is an integer number (70991823).

Almost surely, 2^243400532 is an apocalyptic number.

It is an amenable number.

243400532 is a deficient number, since it is larger than the sum of its proper divisors (182550406).

243400532 is a wasteful number, since it uses less digits than its factorization.

243400532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60850137 (or 60850135 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 243400532 is about 15601.2990484767. The cubic root of 243400532 is about 624.3678147358.

Adding to 243400532 its reverse (235004342), we get a palindrome (478404874).

The spelling of 243400532 in words is "two hundred forty-three million, four hundred thousand, five hundred thirty-two".