243201132 has 72 divisors (see below), whose sum is σ = 625755312. Its totient is φ = 79632000.

The previous prime is 243201131. The next prime is 243201139. The reversal of 243201132 is 231102342.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243201131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 767038 + ... + 767354.

It is an arithmetic number, because the mean of its divisors is an integer number (8691046).

Almost surely, 2^243201132 is an apocalyptic number.

It is an amenable number.

243201132 is an abundant number, since it is smaller than the sum of its proper divisors (382554180).

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

243201132 is a wasteful number, since it uses less digits than its factorization.

243201132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 243201132 is about 15594.9072456363. The cubic root of 243201132 is about 624.1972687441.

Adding to 243201132 its reverse (231102342), we get a palindrome (474303474).

It can be divided in two parts, 24320 and 1132, that added together give a palindrome (25452).

The spelling of 243201132 in words is "two hundred forty-three million, two hundred one thousand, one hundred thirty-two".