321440130220313 has 8 divisors (see below), whose sum is σ = 346197567731400. Its totient is φ = 296687160373248.

The previous prime is 321440130220301. The next prime is 321440130220361. The reversal of 321440130220313 is 313022031044123.

It can be written as a sum of positive squares in 4 ways, for example, as 29873133159424 + 291566997060889 = 5465632^2 + 17075333^2 .

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 321440130220313 - 2¹⁸ = 321440129958169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321440130220613) 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, 1116766568 + ... + 1117054361.

It is an arithmetic number, because the mean of its divisors is an integer number (43274695966425).

Almost surely, 2^{321440130220313} is an apocalyptic number.

It is an amenable number.

321440130220313 is a deficient number, since it is larger than the sum of its proper divisors (24757437511087).

321440130220313 is a wasteful number, since it uses less digits than its factorization.

321440130220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233832011.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 321440130220313 its reverse (313022031044123), we get a palindrome (634462161264436).

The spelling of 321440130220313 in words is "three hundred twenty-one trillion, four hundred forty billion, one hundred thirty million, two hundred twenty thousand, three hundred thirteen".