243425215003 has 4 divisors (see below), whose sum is σ = 245934753400. Its totient is φ = 240915676608.

The previous prime is 243425214953. The next prime is 243425215043. The reversal of 243425215003 is 300512524342.

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 243425215003 - 2¹⁷ = 243425083931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243425215043) 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, 1254769053 + ... + 1254769246.

It is an arithmetic number, because the mean of its divisors is an integer number (61483688350).

Almost surely, 2^243425215003 is an apocalyptic number.

243425215003 is a deficient number, since it is larger than the sum of its proper divisors (2509538397).

243425215003 is an equidigital number, since it uses as much as digits as its factorization.

243425215003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509538396.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 243425215003 its reverse (300512524342), we get a palindrome (543937739345).

The spelling of 243425215003 in words is "two hundred forty-three billion, four hundred twenty-five million, two hundred fifteen thousand, three".