1213313005 has 4 divisors (see below), whose sum is σ = 1455975612. Its totient is φ = 970650400.

The previous prime is 1213312981. The next prime is 1213313009. The reversal of 1213313005 is 5003133121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 465782724 + 747530281 = 21582^2 + 27341^2 .

It is not a de Polignac number, because 1213313005 - 2⁵ = 1213312973 is a prime.

It is a super-3 number, since 3×1213313005³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213313009) 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 3 ways as a sum of consecutive naturals, for example, 121331296 + ... + 121331305.

It is an arithmetic number, because the mean of its divisors is an integer number (363993903).

Almost surely, 2^1213313005 is an apocalyptic number.

It is an amenable number.

1213313005 is a deficient number, since it is larger than the sum of its proper divisors (242662607).

1213313005 is an equidigital number, since it uses as much as digits as its factorization.

1213313005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242662606.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1213313005 is about 34832.6428081476. The cubic root of 1213313005 is about 1066.5738974767.

Adding to 1213313005 its reverse (5003133121), we get a palindrome (6216446126).

The spelling of 1213313005 in words is "one billion, two hundred thirteen million, three hundred thirteen thousand, five".