1313222013 has 12 divisors (see below), whose sum is σ = 1905235488. Its totient is φ = 871623240.

The previous prime is 1313222003. The next prime is 1313222017. The reversal of 1313222013 is 3102223131.

It is not a de Polignac number, because 1313222013 - 2⁴ = 1313221997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313222017) 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 11 ways as a sum of consecutive naturals, for example, 319353 + ... + 323438.

It is an arithmetic number, because the mean of its divisors is an integer number (158769624).

Almost surely, 2^1313222013 is an apocalyptic number.

It is an amenable number.

1313222013 is a deficient number, since it is larger than the sum of its proper divisors (592013475).

1313222013 is a wasteful number, since it uses less digits than its factorization.

1313222013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643024 (or 643021 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1313222013 is about 36238.4052215326. The cubic root of 1313222013 is about 1095.0805145025.

Adding to 1313222013 its reverse (3102223131), we get a palindrome (4415445144).

The spelling of 1313222013 in words is "one billion, three hundred thirteen million, two hundred twenty-two thousand, thirteen".