243132253 has 16 divisors (see below), whose sum is σ = 304891776. Its totient is φ = 188735040.

The previous prime is 243132251. The next prime is 243132311. The reversal of 243132253 is 352231342.

It is not a de Polignac number, because 243132253 - 2¹ = 243132251 is a prime.

It is a super-2 number, since 2×243132253² = 118226584897712018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243132251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20383 + ... + 30028.

It is an arithmetic number, because the mean of its divisors is an integer number (19055736).

Almost surely, 2^243132253 is an apocalyptic number.

It is an amenable number.

243132253 is a deficient number, since it is larger than the sum of its proper divisors (61759523).

243132253 is a wasteful number, since it uses less digits than its factorization.

243132253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50484.

The product of its digits is 4320, while the sum is 25.

The square root of 243132253 is about 15592.6987080492. The cubic root of 243132253 is about 624.1383351599.

Adding to 243132253 its reverse (352231342), we get a palindrome (595363595).

It can be divided in two parts, 243 and 132253, that added together give a square (132496 = 364²).

The spelling of 243132253 in words is "two hundred forty-three million, one hundred thirty-two thousand, two hundred fifty-three".