1313212045 has 16 divisors (see below), whose sum is σ = 1615344192. Its totient is φ = 1024329600.

The previous prime is 1313212027. The next prime is 1313212057. The reversal of 1313212045 is 5402123131.

It is a happy number.

1313212045 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1313212045 - 2¹⁵ = 1313179277 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 124134 + ... + 134296.

It is an arithmetic number, because the mean of its divisors is an integer number (100959012).

Almost surely, 2^1313212045 is an apocalyptic number.

It is an amenable number.

1313212045 is a deficient number, since it is larger than the sum of its proper divisors (302132147).

1313212045 is a wasteful number, since it uses less digits than its factorization.

1313212045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10812.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1313212045 is about 36238.2676876255. The cubic root of 1313212045 is about 1095.0777437626.

Adding to 1313212045 its reverse (5402123131), we get a palindrome (6715335176).

The spelling of 1313212045 in words is "one billion, three hundred thirteen million, two hundred twelve thousand, forty-five".