1202311331213 has 8 divisors (see below), whose sum is σ = 1209419879736. Its totient is φ = 1195204608000.

The previous prime is 1202311331189. The next prime is 1202311331251. The reversal of 1202311331213 is 3121331132021.

It can be written as a sum of positive squares in 4 ways, for example, as 962521890724 + 239789440489 = 981082^2 + 489683^2 .

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 1202311331213 - 2¹⁰ = 1202311330189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202311331293) 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, 876413 + ... + 1781213.

It is an arithmetic number, because the mean of its divisors is an integer number (151177484967).

Almost surely, 2^{1202311331213} is an apocalyptic number.

It is an amenable number.

1202311331213 is a deficient number, since it is larger than the sum of its proper divisors (7108548523).

1202311331213 is an equidigital number, since it uses as much as digits as its factorization.

1202311331213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912655.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1202311331213 its reverse (3121331132021), we get a palindrome (4323642463234).

The spelling of 1202311331213 in words is "one trillion, two hundred two billion, three hundred eleven million, three hundred thirty-one thousand, two hundred thirteen".