1313143221 has 8 divisors (see below), whose sum is σ = 1885539040. Its totient is φ = 808088112.

The previous prime is 1313143213. The next prime is 1313143241. The reversal of 1313143221 is 1223413131.

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

It is not a de Polignac number, because 1313143221 - 2³ = 1313143213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313143201) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16835131 + ... + 16835208.

It is an arithmetic number, because the mean of its divisors is an integer number (235692380).

Almost surely, 2^1313143221 is an apocalyptic number.

It is an amenable number.

1313143221 is a deficient number, since it is larger than the sum of its proper divisors (572395819).

1313143221 is a wasteful number, since it uses less digits than its factorization.

1313143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670355.

The product of its digits is 432, while the sum is 21.

The square root of 1313143221 is about 36237.3180712922. The cubic root of 1313143221 is about 1095.0586128213.

Adding to 1313143221 its reverse (1223413131), we get a palindrome (2536556352).

The spelling of 1313143221 in words is "one billion, three hundred thirteen million, one hundred forty-three thousand, two hundred twenty-one".