242503313 has 8 divisors (see below), whose sum is σ = 261287208. Its totient is φ = 223737984.

The previous prime is 242503279. The next prime is 242503319. The reversal of 242503313 is 313305242.

242503313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 34480384 + 208022929 = 5872^2 + 14423^2 .

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 242503313 - 2²⁶ = 175394449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242503319) 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, 35231 + ... + 41547.

It is an arithmetic number, because the mean of its divisors is an integer number (32660901).

Almost surely, 2^242503313 is an apocalyptic number.

It is an amenable number.

242503313 is a deficient number, since it is larger than the sum of its proper divisors (18783895).

242503313 is a wasteful number, since it uses less digits than its factorization.

242503313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9283.

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

The square root of 242503313 is about 15572.5178760533. The cubic root of 242503313 is about 623.5996920567.

Adding to 242503313 its reverse (313305242), we get a palindrome (555808555).

The spelling of 242503313 in words is "two hundred forty-two million, five hundred three thousand, three hundred thirteen".