243132002503 has 4 divisors (see below), whose sum is σ = 261834464248. Its totient is φ = 224429540760.

The previous prime is 243132002489. The next prime is 243132002539. The reversal of 243132002503 is 305200231342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243132002503 - 2⁹ = 243132001991 is a prime.

It is a super-2 number, since 2×243132002503² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243132302503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9351230853 + ... + 9351230878.

It is an arithmetic number, because the mean of its divisors is an integer number (65458616062).

Almost surely, 2^243132002503 is an apocalyptic number.

243132002503 is a deficient number, since it is larger than the sum of its proper divisors (18702461745).

243132002503 is a wasteful number, since it uses less digits than its factorization.

243132002503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18702461744.

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

Adding to 243132002503 its reverse (305200231342), we get a palindrome (548332233845).

The spelling of 243132002503 in words is "two hundred forty-three billion, one hundred thirty-two million, two thousand, five hundred three".