1216114311 has 8 divisors (see below), whose sum is σ = 1624057984. Its totient is φ = 809456760.

The previous prime is 1216114303. The next prime is 1216114337. The reversal of 1216114311 is 1134116121.

1216114311 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1216114311 - 2³ = 1216114303 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 (1216114301) 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, 319321 + ... + 323106.

It is an arithmetic number, because the mean of its divisors is an integer number (203007248).

Almost surely, 2^1216114311 is an apocalyptic number.

1216114311 is a deficient number, since it is larger than the sum of its proper divisors (407943673).

1216114311 is an equidigital number, since it uses as much as digits as its factorization.

1216114311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643061.

The product of its digits is 144, while the sum is 21.

The square root of 1216114311 is about 34872.8305561794. The cubic root of 1216114311 is about 1067.3941044562.

The spelling of 1216114311 in words is "one billion, two hundred sixteen million, one hundred fourteen thousand, three hundred eleven".