243043321532 has 18 divisors (see below), whose sum is σ = 467506885944. Its totient is φ = 110474236840.

The previous prime is 243043321519. The next prime is 243043321603. The reversal of 243043321532 is 235123340342.

It is a super-2 number, since 2×243043321532² (a number of 24 digits) contains 22 as substring.

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, 251077328 + ... + 251078295.

Almost surely, 2^243043321532 is an apocalyptic number.

243043321532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

243043321532 is a deficient number, since it is larger than the sum of its proper divisors (224463564412).

243043321532 is a wasteful number, since it uses less digits than its factorization.

243043321532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502155649 (or 502155636 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 243043321532 its reverse (235123340342), we get a palindrome (478166661874).

The spelling of 243043321532 in words is "two hundred forty-three billion, forty-three million, three hundred twenty-one thousand, five hundred thirty-two".