1302313021213 has 4 divisors (see below), whose sum is σ = 1303679562588. Its totient is φ = 1300946479840.

The previous prime is 1302313021199. The next prime is 1302313021313. The reversal of 1302313021213 is 3121203132031.

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 613084302009 + 689228719204 = 782997^2 + 830198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302313021213 - 2⁵ = 1302313021181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1302313021313) 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, 683269258 + ... + 683271163.

It is an arithmetic number, because the mean of its divisors is an integer number (325919890647).

Almost surely, 2^{1302313021213} is an apocalyptic number.

It is an amenable number.

1302313021213 is a deficient number, since it is larger than the sum of its proper divisors (1366541375).

1302313021213 is an equidigital number, since it uses as much as digits as its factorization.

1302313021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366541374.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1302313021213 its reverse (3121203132031), we get a palindrome (4423516153244).

The spelling of 1302313021213 in words is "one trillion, three hundred two billion, three hundred thirteen million, twenty-one thousand, two hundred thirteen".