214981911 has 8 divisors (see below), whose sum is σ = 318491760. Its totient is φ = 143321256.

The previous prime is 214981891. The next prime is 214981919. The reversal of 214981911 is 119189412.

214981911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214981911 - 2⁷ = 214981783 is a prime.

It is a super-4 number, since 4×214981911⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214981919) 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, 3981120 + ... + 3981173.

It is an arithmetic number, because the mean of its divisors is an integer number (39811470).

Almost surely, 2^214981911 is an apocalyptic number.

214981911 is a deficient number, since it is larger than the sum of its proper divisors (103509849).

214981911 is an equidigital number, since it uses as much as digits as its factorization.

214981911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7962302 (or 7962296 counting only the distinct ones).

The product of its digits is 5184, while the sum is 36.

The square root of 214981911 is about 14662.2614558601. The cubic root of 214981911 is about 599.0558400493.

It can be divided in two parts, 21498 and 1911, that added together give a square (23409 = 153²).

The spelling of 214981911 in words is "two hundred fourteen million, nine hundred eighty-one thousand, nine hundred eleven".