234218657 has 2 divisors, whose sum is σ = 234218658. Its totient is φ = 234218656.

The previous prime is 234218623. The next prime is 234218687. The reversal of 234218657 is 756812432.

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., 234212416 + 6241 = 15304^2 + 79^2 .

It is a cyclic number.

It is not a de Polignac number, because 234218657 - 2²⁰ = 233170081 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234218657.

It is not a weakly prime, because it can be changed into another prime (234218617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117109328 + 117109329.

It is an arithmetic number, because the mean of its divisors is an integer number (117109329).

Almost surely, 2^234218657 is an apocalyptic number.

It is an amenable number.

234218657 is a deficient number, since it is larger than the sum of its proper divisors (1).

234218657 is an equidigital number, since it uses as much as digits as its factorization.

234218657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 234218657 is about 15304.2038995826. The cubic root of 234218657 is about 616.4158947567.

The spelling of 234218657 in words is "two hundred thirty-four million, two hundred eighteen thousand, six hundred fifty-seven".