321303012313 has 4 divisors (see below), whose sum is σ = 322066202788. Its totient is φ = 320539821840.

The previous prime is 321303012307. The next prime is 321303012341. The reversal of 321303012313 is 313210303123.

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 13531040329 + 307771971984 = 116323^2 + 554772^2 .

It is a cyclic number.

It is not a de Polignac number, because 321303012313 - 2²⁵ = 321269457881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321303010313) 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, 381594606 + ... + 381595447.

It is an arithmetic number, because the mean of its divisors is an integer number (80516550697).

Almost surely, 2^321303012313 is an apocalyptic number.

It is an amenable number.

321303012313 is a deficient number, since it is larger than the sum of its proper divisors (763190475).

321303012313 is an equidigital number, since it uses as much as digits as its factorization.

321303012313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763190474.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 321303012313 its reverse (313210303123), we get a palindrome (634513315436).

The spelling of 321303012313 in words is "three hundred twenty-one billion, three hundred three million, twelve thousand, three hundred thirteen".