1313321436 has 144 divisors (see below), whose sum is σ = 3976487424. Its totient is φ = 357337728.

The previous prime is 1313321419. The next prime is 1313321441. The reversal of 1313321436 is 6341233131.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2010886 + ... + 2011538.

It is an arithmetic number, because the mean of its divisors is an integer number (27614496).

Almost surely, 2^1313321436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313321436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1988243712).

1313321436 is an abundant number, since it is smaller than the sum of its proper divisors (2663165988).

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

1313321436 is a wasteful number, since it uses less digits than its factorization.

1313321436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1035 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 1313321436 is about 36239.7769860688. The cubic root of 1313321436 is about 1095.1081496984.

Adding to 1313321436 its reverse (6341233131), we get a palindrome (7654554567).

The spelling of 1313321436 in words is "one billion, three hundred thirteen million, three hundred twenty-one thousand, four hundred thirty-six".