304400401313 has 4 divisors (see below), whose sum is σ = 306082171668. Its totient is φ = 302718630960.

The previous prime is 304400401309. The next prime is 304400401351. The reversal of 304400401313 is 313104004403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9972618769 + 294427782544 = 99863^2 + 542612^2 .

It is a cyclic number.

It is not a de Polignac number, because 304400401313 - 2² = 304400401309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (304400401373) 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, 840884906 + ... + 840885267.

It is an arithmetic number, because the mean of its divisors is an integer number (76520542917).

Almost surely, 2^304400401313 is an apocalyptic number.

It is an amenable number.

304400401313 is a deficient number, since it is larger than the sum of its proper divisors (1681770355).

304400401313 is a wasteful number, since it uses less digits than its factorization.

304400401313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681770354.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 304400401313 its reverse (313104004403), we get a palindrome (617504405716).

The spelling of 304400401313 in words is "three hundred four billion, four hundred million, four hundred one thousand, three hundred thirteen".