214144981 has 2 divisors, whose sum is σ = 214144982. Its totient is φ = 214144980.

The previous prime is 214144949. The next prime is 214145003. The reversal of 214144981 is 189441412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196252081 + 17892900 = 14009^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 214144981 - 2⁵ = 214144949 is a prime.

It is a super-2 number, since 2×214144981² = 91716145774980722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214144921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107072490 + 107072491.

It is an arithmetic number, because the mean of its divisors is an integer number (107072491).

Almost surely, 2^214144981 is an apocalyptic number.

It is an amenable number.

214144981 is a deficient number, since it is larger than the sum of its proper divisors (1).

214144981 is an equidigital number, since it uses as much as digits as its factorization.

214144981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 214144981 is about 14633.6933478873. The cubic root of 214144981 is about 598.2774492455.

The spelling of 214144981 in words is "two hundred fourteen million, one hundred forty-four thousand, nine hundred eighty-one".