243132453 has 24 divisors (see below), whose sum is σ = 373111128. Its totient is φ = 152036352.

The previous prime is 243132437. The next prime is 243132467. The reversal of 243132453 is 354231342.

It can be written as a sum of positive squares in 4 ways, for example, as 55086084 + 188046369 = 7422^2 + 13713^2 .

It is not a de Polignac number, because 243132453 - 2⁴ = 243132437 is a prime.

It is a super-2 number, since 2×243132453² = 118226779403594418, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243132403) 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, 45351 + ... + 50427.

It is an arithmetic number, because the mean of its divisors is an integer number (15546297).

Almost surely, 2^243132453 is an apocalyptic number.

It is an amenable number.

243132453 is a deficient number, since it is larger than the sum of its proper divisors (129978675).

243132453 is a wasteful number, since it uses less digits than its factorization.

243132453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5413 (or 5410 counting only the distinct ones).

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

The square root of 243132453 is about 15592.7051213059. The cubic root of 243132453 is about 624.1385062980.

Adding to 243132453 its reverse (354231342), we get a palindrome (597363795).

The spelling of 243132453 in words is "two hundred forty-three million, one hundred thirty-two thousand, four hundred fifty-three".