214230991 has 12 divisors (see below), whose sum is σ = 245626992. Its totient is φ = 186116736.

The previous prime is 214230979. The next prime is 214231019. The reversal of 214230991 is 199032412.

It is not a de Polignac number, because 214230991 - 2⁹ = 214230479 is a prime.

It is a super-3 number, since 3×214230991³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214230911) 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 11 ways as a sum of consecutive naturals, for example, 34411 + ... + 40156.

It is an arithmetic number, because the mean of its divisors is an integer number (20468916).

Almost surely, 2^214230991 is an apocalyptic number.

214230991 is a deficient number, since it is larger than the sum of its proper divisors (31396001).

214230991 is a wasteful number, since it uses less digits than its factorization.

214230991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74610 (or 74597 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 214230991 is about 14636.6318188305. The cubic root of 214230991 is about 598.3575366633.

It can be divided in two parts, 2142 and 30991, that added together give a palindrome (33133).

The spelling of 214230991 in words is "two hundred fourteen million, two hundred thirty thousand, nine hundred ninety-one".