1313021313 has 16 divisors (see below), whose sum is σ = 2012294400. Its totient is φ = 845162640.

The previous prime is 1313021293. The next prime is 1313021321. The reversal of 1313021313 is 3131203131.

It is a happy number.

It is not a de Polignac number, because 1313021313 - 2⁶ = 1313021249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313021323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837673 + ... + 839238.

It is an arithmetic number, because the mean of its divisors is an integer number (125768400).

Almost surely, 2^1313021313 is an apocalyptic number.

It is an amenable number.

1313021313 is a deficient number, since it is larger than the sum of its proper divisors (699273087).

1313021313 is a wasteful number, since it uses less digits than its factorization.

1313021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676949 (or 1676943 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1313021313 is about 36235.6359541267. The cubic root of 1313021313 is about 1095.0247245309.

Adding to 1313021313 its reverse (3131203131), we get a palindrome (4444224444).

It can be divided in two parts, 13130 and 21313, that added together give a palindrome (34443).

The spelling of 1313021313 in words is "one billion, three hundred thirteen million, twenty-one thousand, three hundred thirteen".