1213113311 has 8 divisors (see below), whose sum is σ = 1332481920. Its totient is φ = 1099296792.

The previous prime is 1213113299. The next prime is 1213113329. The reversal of 1213113311 is 1133113121.

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 1213113311 - 2¹⁰ = 1213112287 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 1213113311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213113361) 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 7 ways as a sum of consecutive naturals, for example, 1387565 + ... + 1388438.

It is an arithmetic number, because the mean of its divisors is an integer number (166560240).

Almost surely, 2^1213113311 is an apocalyptic number.

1213113311 is a deficient number, since it is larger than the sum of its proper divisors (119368609).

1213113311 is a wasteful number, since it uses less digits than its factorization.

1213113311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776045.

The product of its digits is 54, while the sum is 17.

The square root of 1213113311 is about 34829.7762123158. The cubic root of 1213113311 is about 1066.5153799870.

Adding to 1213113311 its reverse (1133113121), we get a palindrome (2346226432).

The spelling of 1213113311 in words is "one billion, two hundred thirteen million, one hundred thirteen thousand, three hundred eleven".