214732991 has 8 divisors (see below), whose sum is σ = 244439424. Its totient is φ = 186724120.

The previous prime is 214732979. The next prime is 214733011. The reversal of 214732991 is 199237412.

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

It is not a de Polignac number, because 214732991 - 2¹⁰ = 214731967 is a prime.

It is a super-2 number, since 2×214732991² = 92220514847612162, which contains 22 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 (214732951) 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, 424121 + ... + 424626.

It is an arithmetic number, because the mean of its divisors is an integer number (30554928).

Almost surely, 2^214732991 is an apocalyptic number.

214732991 is a deficient number, since it is larger than the sum of its proper divisors (29706433).

214732991 is a wasteful number, since it uses less digits than its factorization.

214732991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848781.

The product of its digits is 27216, while the sum is 38.

The square root of 214732991 is about 14653.7705386702. The cubic root of 214732991 is about 598.8245421872.

The spelling of 214732991 in words is "two hundred fourteen million, seven hundred thirty-two thousand, nine hundred ninety-one".