243352013 has 4 divisors (see below), whose sum is σ = 243397728. Its totient is φ = 243306300.

The previous prime is 243352009. The next prime is 243352027. The reversal of 243352013 is 310253342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243352013 - 2² = 243352009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243352013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243352073) 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, 13631 + ... + 25932.

It is an arithmetic number, because the mean of its divisors is an integer number (60849432).

Almost surely, 2^243352013 is an apocalyptic number.

It is an amenable number.

243352013 is a deficient number, since it is larger than the sum of its proper divisors (45715).

243352013 is an equidigital number, since it uses as much as digits as its factorization.

243352013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 243352013 is about 15599.7440043098. The cubic root of 243352013 is about 624.3263252139.

The spelling of 243352013 in words is "two hundred forty-three million, three hundred fifty-two thousand, thirteen".