239802313 has 4 divisors (see below), whose sum is σ = 243381520. Its totient is φ = 236223108.

The previous prime is 239802293. The next prime is 239802337. The reversal of 239802313 is 313208932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239802313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (239802113) 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, 1789503 + ... + 1789636.

It is an arithmetic number, because the mean of its divisors is an integer number (60845380).

Almost surely, 2^239802313 is an apocalyptic number.

It is an amenable number.

239802313 is a deficient number, since it is larger than the sum of its proper divisors (3579207).

239802313 is an equidigital number, since it uses as much as digits as its factorization.

239802313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579206.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 239802313 is about 15485.5517499377. The cubic root of 239802313 is about 621.2758266897.

The spelling of 239802313 in words is "two hundred thirty-nine million, eight hundred two thousand, three hundred thirteen".