234712521 has 12 divisors (see below), whose sum is σ = 339188148. Its totient is φ = 156401664.

The previous prime is 234712483. The next prime is 234712531. The reversal of 234712521 is 125217432.

It can be written as a sum of positive squares in 2 ways, for example, as 223921296 + 10791225 = 14964^2 + 3285^2 .

It is not a de Polignac number, because 234712521 - 2¹⁰ = 234711497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (234712531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20041 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (28265679).

Almost surely, 2^234712521 is an apocalyptic number.

It is an amenable number.

234712521 is a deficient number, since it is larger than the sum of its proper divisors (104475627).

234712521 is a wasteful number, since it uses less digits than its factorization.

234712521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12232 (or 12229 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 234712521 is about 15320.3303162823. The cubic root of 234712521 is about 616.8488404880.

Adding to 234712521 its reverse (125217432), we get a palindrome (359929953).

The spelling of 234712521 in words is "two hundred thirty-four million, seven hundred twelve thousand, five hundred twenty-one".