214151321 has 4 divisors (see below), whose sum is σ = 223462272. Its totient is φ = 204840372.

The previous prime is 214151303. The next prime is 214151347. The reversal of 214151321 is 123151412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214151321 - 2⁶ = 214151257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 214151293 and 214151302.

It is not an unprimeable number, because it can be changed into a prime (214151381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4655441 + ... + 4655486.

It is an arithmetic number, because the mean of its divisors is an integer number (55865568).

Almost surely, 2^214151321 is an apocalyptic number.

It is an amenable number.

214151321 is a deficient number, since it is larger than the sum of its proper divisors (9310951).

214151321 is an equidigital number, since it uses as much as digits as its factorization.

214151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310950.

The product of its digits is 240, while the sum is 20.

The square root of 214151321 is about 14633.9099696561. The cubic root of 214151321 is about 598.2833534100.

Subtracting from 214151321 its reverse (123151412), we obtain a palindrome (90999909).

The spelling of 214151321 in words is "two hundred fourteen million, one hundred fifty-one thousand, three hundred twenty-one".