243613061 has 4 divisors (see below), whose sum is σ = 243710892. Its totient is φ = 243515232.

The previous prime is 243613057. The next prime is 243613067. The reversal of 243613061 is 160316342.

243613061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180902500 + 62710561 = 13450^2 + 7919^2 .

It is a cyclic number.

It is not a de Polignac number, because 243613061 - 2² = 243613057 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 243613061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243613067) 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, 45080 + ... + 50193.

It is an arithmetic number, because the mean of its divisors is an integer number (60927723).

Almost surely, 2^243613061 is an apocalyptic number.

It is an amenable number.

243613061 is a deficient number, since it is larger than the sum of its proper divisors (97831).

243613061 is an equidigital number, since it uses as much as digits as its factorization.

243613061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97830.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 243613061 is about 15608.1088220194. The cubic root of 243613061 is about 624.5494873928.

The spelling of 243613061 in words is "two hundred forty-three million, six hundred thirteen thousand, sixty-one".