1313420631402 has 96 divisors (see below), whose sum is σ = 2938883976000. Its totient is φ = 390937409280.

The previous prime is 1313420631361. The next prime is 1313420631473. The reversal of 1313420631402 is 2041360243131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313420631402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16937374 + ... + 17014742.

It is an arithmetic number, because the mean of its divisors is an integer number (30613374750).

Almost surely, 2^{1313420631402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313420631402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469441988000).

1313420631402 is an abundant number, since it is smaller than the sum of its proper divisors (1625463344598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313420631402 is a wasteful number, since it uses less digits than its factorization.

1313420631402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77812 (or 77801 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 1313420631402 its reverse (2041360243131), we get a palindrome (3354780874533).

The spelling of 1313420631402 in words is "one trillion, three hundred thirteen billion, four hundred twenty million, six hundred thirty-one thousand, four hundred two".