1313203131322 has 4 divisors (see below), whose sum is σ = 1969804696986. Its totient is φ = 656601565660.

The previous prime is 1313203131299. The next prime is 1313203131341. The reversal of 1313203131322 is 2231313023131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1310518958841 + 2684172481 = 1144779^2 + 51809^2 .

It is a super-2 number, since 2×1313203131322² (a number of 25 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 328300782829 + ... + 328300782832.

Almost surely, 2^{1313203131322} is an apocalyptic number.

1313203131322 is a deficient number, since it is larger than the sum of its proper divisors (656601565664).

1313203131322 is an equidigital number, since it uses as much as digits as its factorization.

1313203131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656601565663.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1313203131322 its reverse (2231313023131), we get a palindrome (3544516154453).

The spelling of 1313203131322 in words is "one trillion, three hundred thirteen billion, two hundred three million, one hundred thirty-one thousand, three hundred twenty-two".