1313013155 has 4 divisors (see below), whose sum is σ = 1575615792. Its totient is φ = 1050410520.

The previous prime is 1313013047. The next prime is 1313013209. The reversal of 1313013155 is 5513103131.

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

It is not a de Polignac number, because 1313013155 - 2¹⁴ = 1312996771 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 1313013155.

It is an unprimeable number.

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, 131301311 + ... + 131301320.

It is an arithmetic number, because the mean of its divisors is an integer number (393903948).

Almost surely, 2^1313013155 is an apocalyptic number.

1313013155 is a deficient number, since it is larger than the sum of its proper divisors (262602637).

1313013155 is an equidigital number, since it uses as much as digits as its factorization.

1313013155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262602636.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 1313013155 is about 36235.5233852086. The cubic root of 1313013155 is about 1095.0224566748.

Adding to 1313013155 its reverse (5513103131), we get a palindrome (6826116286).

The spelling of 1313013155 in words is "one billion, three hundred thirteen million, thirteen thousand, one hundred fifty-five".