243342613 has 2 divisors, whose sum is σ = 243342614. Its totient is φ = 243342612.

The previous prime is 243342601. The next prime is 243342623. The reversal of 243342613 is 316243342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161747524 + 81595089 = 12718^2 + 9033^2 .

It is a cyclic number.

It is not a de Polignac number, because 243342613 - 2²⁵ = 209788181 is a prime.

It is equal to p_13334671 and since 243342613 and 13334671 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243342623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121671306 + 121671307.

It is an arithmetic number, because the mean of its divisors is an integer number (121671307).

Almost surely, 2^243342613 is an apocalyptic number.

It is an amenable number.

243342613 is a deficient number, since it is larger than the sum of its proper divisors (1).

243342613 is an equidigital number, since it uses as much as digits as its factorization.

243342613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 28.

The square root of 243342613 is about 15599.4427144049. The cubic root of 243342613 is about 624.3182864570.

Adding to 243342613 its reverse (316243342), we get a palindrome (559585955).

The spelling of 243342613 in words is "two hundred forty-three million, three hundred forty-two thousand, six hundred thirteen".