304142313 has 4 divisors (see below), whose sum is σ = 405523088. Its totient is φ = 202761540.

The previous prime is 304142303. The next prime is 304142353. The reversal of 304142313 is 313241403.

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, and also an emirpimes, since its reverse is a distinct semiprime: 313241403 = 3 ⋅104413801.

It is not a de Polignac number, because 304142313 - 2⁸ = 304142057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 304142313.

It is not an unprimeable number, because it can be changed into a prime (304142303) 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, 50690383 + ... + 50690388.

It is an arithmetic number, because the mean of its divisors is an integer number (101380772).

Almost surely, 2^304142313 is an apocalyptic number.

It is an amenable number.

304142313 is a deficient number, since it is larger than the sum of its proper divisors (101380775).

304142313 is a wasteful number, since it uses less digits than its factorization.

304142313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101380774.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 304142313 is about 17439.6764018143. The cubic root of 304142313 is about 672.4999888522.

Adding to 304142313 its reverse (313241403), we get a palindrome (617383716).

It can be divided in two parts, 3041 and 42313, that added together give a palindrome (45354).

The spelling of 304142313 in words is "three hundred four million, one hundred forty-two thousand, three hundred thirteen".