1213144311 has 8 divisors (see below), whose sum is σ = 1617742720. Its totient is φ = 808654392.

The previous prime is 1213144267. The next prime is 1213144363. The reversal of 1213144311 is 1134413121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213144311 - 2⁷ = 1213144183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213144391) 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, 4110 + ... + 49428.

It is an arithmetic number, because the mean of its divisors is an integer number (202217840).

Almost surely, 2^1213144311 is an apocalyptic number.

1213144311 is a deficient number, since it is larger than the sum of its proper divisors (404598409).

1213144311 is an equidigital number, since it uses as much as digits as its factorization.

1213144311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54245.

The product of its digits is 288, while the sum is 21.

The square root of 1213144311 is about 34830.2212309942. The cubic root of 1213144311 is about 1066.5244645176.

Adding to 1213144311 its reverse (1134413121), we get a palindrome (2347557432).

The spelling of 1213144311 in words is "one billion, two hundred thirteen million, one hundred forty-four thousand, three hundred eleven".