243145332 has 18 divisors (see below), whose sum is σ = 614617458. Its totient is φ = 81048432.

The previous prime is 243145321. The next prime is 243145391. The reversal of 243145332 is 233541342.

243145332 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 157101156 + 86044176 = 12534^2 + 9276^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 243145296 and 243145305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3376983 + ... + 3377054.

Almost surely, 2^243145332 is an apocalyptic number.

It is an amenable number.

243145332 is an abundant number, since it is smaller than the sum of its proper divisors (371472126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243145332 is a wasteful number, since it uses less digits than its factorization.

243145332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6754047 (or 6754042 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 243145332 is about 15593.1180974172. The cubic root of 243145332 is about 624.1495265434.

Adding to 243145332 its reverse (233541342), we get a palindrome (476686674).

It can be divided in two parts, 24314 and 5332, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 243145332 in words is "two hundred forty-three million, one hundred forty-five thousand, three hundred thirty-two".