1312131322202 has 8 divisors (see below), whose sum is σ = 1995158586036. Its totient is φ = 647078460192.

The previous prime is 1312131322193. The next prime is 1312131322223. The reversal of 1312131322202 is 2022231312131.

It can be written as a sum of positive squares in 2 ways, for example, as 1288608658561 + 23522663641 = 1135169^2 + 153371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4493600273 + ... + 4493600564.

Almost surely, 2^{1312131322202} is an apocalyptic number.

1312131322202 is a deficient number, since it is larger than the sum of its proper divisors (683027263834).

1312131322202 is an equidigital number, since it uses as much as digits as its factorization.

1312131322202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987200912.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1312131322202 its reverse (2022231312131), we get a palindrome (3334362634333).

The spelling of 1312131322202 in words is "one trillion, three hundred twelve billion, one hundred thirty-one million, three hundred twenty-two thousand, two hundred two".