1313111209 has 8 divisors (see below), whose sum is σ = 1318125440. Its totient is φ = 1308106800.

The previous prime is 1313111203. The next prime is 1313111273. The reversal of 1313111209 is 9021113131.

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 1313111209 - 2⁹ = 1313110697 is a prime.

It is a super-2 number, since 2×1313111209² = 3448522094402883362, which contains 22 as substring.

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 1313111209.

It is not an unprimeable number, because it can be changed into a prime (1313111203) 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, 359824 + ... + 363454.

It is an arithmetic number, because the mean of its divisors is an integer number (164765680).

Almost surely, 2^1313111209 is an apocalyptic number.

It is an amenable number.

1313111209 is a deficient number, since it is larger than the sum of its proper divisors (5014231).

1313111209 is an equidigital number, since it uses as much as digits as its factorization.

1313111209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4911.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1313111209 is about 36236.8763692457. The cubic root of 1313111209 is about 1095.0497142487.

The spelling of 1313111209 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, two hundred nine".