214240261 has 2 divisors, whose sum is σ = 214240262. Its totient is φ = 214240260.

The previous prime is 214240231. The next prime is 214240277. The reversal of 214240261 is 162042412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118396161 + 95844100 = 10881^2 + 9790^2 .

It is a cyclic number.

It is not a de Polignac number, because 214240261 - 2²⁵ = 180685829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214240231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107120130 + 107120131.

It is an arithmetic number, because the mean of its divisors is an integer number (107120131).

Almost surely, 2^214240261 is an apocalyptic number.

It is an amenable number.

214240261 is a deficient number, since it is larger than the sum of its proper divisors (1).

214240261 is an equidigital number, since it uses as much as digits as its factorization.

214240261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 214240261 is about 14636.9484866211. The cubic root of 214240261 is about 598.3661670585.

Adding to 214240261 its reverse (162042412), we get a palindrome (376282673).

The spelling of 214240261 in words is "two hundred fourteen million, two hundred forty thousand, two hundred sixty-one".