234218539 has 2 divisors, whose sum is σ = 234218540. Its totient is φ = 234218538.

The previous prime is 234218519. The next prime is 234218557. The reversal of 234218539 is 935812432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 234218539 - 2⁵ = 234218507 is a prime.

It is a super-2 number, since 2×234218539² = 109716648022589042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 234218498 and 234218507.

It is not a weakly prime, because it can be changed into another prime (234218519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117109269 + 117109270.

It is an arithmetic number, because the mean of its divisors is an integer number (117109270).

Almost surely, 2^234218539 is an apocalyptic number.

234218539 is a deficient number, since it is larger than the sum of its proper divisors (1).

234218539 is an equidigital number, since it uses as much as digits as its factorization.

234218539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 234218539 is about 15304.2000444322. The cubic root of 234218539 is about 616.4157912393.

The spelling of 234218539 in words is "two hundred thirty-four million, two hundred eighteen thousand, five hundred thirty-nine".