243286073 has 4 divisors (see below), whose sum is σ = 245694948. Its totient is φ = 240877200.

The previous prime is 243286067. The next prime is 243286079. The reversal of 243286073 is 370682342.

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

It is an interprime number because it is at equal distance from previous prime (243286067) and next prime (243286079).

It can be written as a sum of positive squares in 2 ways, for example, as 137545984 + 105740089 = 11728^2 + 10283^2 .

It is a cyclic number.

It is not a de Polignac number, because 243286073 - 2⁸ = 243285817 is a prime.

It is a super-2 number, since 2×243286073² = 118376226631522658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243286079) 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, 1204286 + ... + 1204487.

It is an arithmetic number, because the mean of its divisors is an integer number (61423737).

Almost surely, 2^243286073 is an apocalyptic number.

It is an amenable number.

243286073 is a deficient number, since it is larger than the sum of its proper divisors (2408875).

243286073 is a wasteful number, since it uses less digits than its factorization.

243286073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408874.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 243286073 is about 15597.6303648984. The cubic root of 243286073 is about 624.2699298214.

The spelling of 243286073 in words is "two hundred forty-three million, two hundred eighty-six thousand, seventy-three".