1214215311 has 16 divisors (see below), whose sum is σ = 1715459840. Its totient is φ = 761788800.

The previous prime is 1214215307. The next prime is 1214215363. The reversal of 1214215311 is 1135124121.

It is not a de Polignac number, because 1214215311 - 2² = 1214215307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214215391) 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 15 ways as a sum of consecutive naturals, for example, 61930 + ... + 79143.

It is an arithmetic number, because the mean of its divisors is an integer number (107216240).

Almost surely, 2^1214215311 is an apocalyptic number.

1214215311 is a deficient number, since it is larger than the sum of its proper divisors (501244529).

1214215311 is a wasteful number, since it uses less digits than its factorization.

1214215311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141246.

The product of its digits is 240, while the sum is 21.

The square root of 1214215311 is about 34845.5924185542. The cubic root of 1214215311 is about 1066.8382254113.

Adding to 1214215311 its reverse (1135124121), we get a palindrome (2349339432).

The spelling of 1214215311 in words is "one billion, two hundred fourteen million, two hundred fifteen thousand, three hundred eleven".