1313221033 has 8 divisors (see below), whose sum is σ = 1324052352. Its totient is φ = 1302425376.

The previous prime is 1313221027. The next prime is 1313221067. The reversal of 1313221033 is 3301223131.

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

It is a cyclic number.

It is not a de Polignac number, because 1313221033 - 2⁹ = 1313220521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313221033.

It is not an unprimeable number, because it can be changed into a prime (1313221093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67716 + ... + 84922.

It is an arithmetic number, because the mean of its divisors is an integer number (165506544).

Almost surely, 2^1313221033 is an apocalyptic number.

It is an amenable number.

1313221033 is a deficient number, since it is larger than the sum of its proper divisors (10831319).

1313221033 is a wasteful number, since it uses less digits than its factorization.

1313221033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17831.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313221033 is about 36238.3916999637. The cubic root of 1313221033 is about 1095.0802420989.

Adding to 1313221033 its reverse (3301223131), we get a palindrome (4614444164).

It can be divided in two parts, 131322 and 1033, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 1313221033 in words is "one billion, three hundred thirteen million, two hundred twenty-one thousand, thirty-three".