214031021 has 8 divisors (see below), whose sum is σ = 216929664. Its totient is φ = 211140160.

The previous prime is 214030967. The next prime is 214031033. The reversal of 214031021 is 120130412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214031021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214030987 and 214031005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214051021) 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, 71660 + ... + 74586.

It is an arithmetic number, because the mean of its divisors is an integer number (27116208).

Almost surely, 2^214031021 is an apocalyptic number.

It is an amenable number.

214031021 is a deficient number, since it is larger than the sum of its proper divisors (2898643).

214031021 is an equidigital number, since it uses as much as digits as its factorization.

214031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 214031021 is about 14629.7990758588. The cubic root of 214031021 is about 598.1713034067.

Adding to 214031021 its reverse (120130412), we get a palindrome (334161433).

The spelling of 214031021 in words is "two hundred fourteen million, thirty-one thousand, twenty-one".