234343521 has 12 divisors (see below), whose sum is σ = 358407972. Its totient is φ = 147038976.

The previous prime is 234343513. The next prime is 234343531. The reversal of 234343521 is 125343432.

It can be written as a sum of positive squares in 2 ways, for example, as 92852496 + 141491025 = 9636^2 + 11895^2 .

It is not a de Polignac number, because 234343521 - 2³ = 234343513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (234343531) 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 in 11 ways as a sum of consecutive naturals, for example, 765676 + ... + 765981.

It is an arithmetic number, because the mean of its divisors is an integer number (29867331).

Almost surely, 2^234343521 is an apocalyptic number.

It is an amenable number.

234343521 is a deficient number, since it is larger than the sum of its proper divisors (124064451).

234343521 is a wasteful number, since it uses less digits than its factorization.

234343521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531680 (or 1531677 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 234343521 is about 15308.2827580366. The cubic root of 234343521 is about 616.5254141859.

Adding to 234343521 its reverse (125343432), we get a palindrome (359686953).

The spelling of 234343521 in words is "two hundred thirty-four million, three hundred forty-three thousand, five hundred twenty-one".