1214831911 has 8 divisors (see below), whose sum is σ = 1219158000. Its totient is φ = 1210513920.

The previous prime is 1214831903. The next prime is 1214831929. The reversal of 1214831911 is 1191384121.

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 1214831911 - 2³ = 1214831903 is a prime.

It is a super-3 number, since 3×1214831911³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214831311) 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, 478716 + ... + 481246.

It is an arithmetic number, because the mean of its divisors is an integer number (152394750).

Almost surely, 2^1214831911 is an apocalyptic number.

1214831911 is a deficient number, since it is larger than the sum of its proper divisors (4326089).

1214831911 is a wasteful number, since it uses less digits than its factorization.

1214831911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049.

The product of its digits is 1728, while the sum is 31.

The square root of 1214831911 is about 34854.4388995146. The cubic root of 1214831911 is about 1067.0187812884.

The spelling of 1214831911 in words is "one billion, two hundred fourteen million, eight hundred thirty-one thousand, nine hundred eleven".