243025613 has 8 divisors (see below), whose sum is σ = 254102400. Its totient is φ = 231991408.

The previous prime is 243025609. The next prime is 243025619. The reversal of 243025613 is 316520342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243025613 - 2² = 243025609 is a prime.

It is a super-2 number, since 2×243025613² = 118122897148051538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243025619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328 + ... + 22086.

It is an arithmetic number, because the mean of its divisors is an integer number (31762800).

Almost surely, 2^243025613 is an apocalyptic number.

243025613 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

243025613 is a deficient number, since it is larger than the sum of its proper divisors (11076787).

243025613 is a wasteful number, since it uses less digits than its factorization.

243025613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21291.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 243025613 is about 15589.2787838309. The cubic root of 243025613 is about 624.0470709136.

Adding to 243025613 its reverse (316520342), we get a palindrome (559545955).

The spelling of 243025613 in words is "two hundred forty-three million, twenty-five thousand, six hundred thirteen".