234721534 has 16 divisors (see below), whose sum is σ = 370199520. Its totient is φ = 111454560.

The previous prime is 234721523. The next prime is 234721547. The reversal of 234721534 is 435127432.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 234721496 and 234721505.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29634 + ... + 36709.

It is an arithmetic number, because the mean of its divisors is an integer number (23137470).

Almost surely, 2^234721534 is an apocalyptic number.

234721534 is a deficient number, since it is larger than the sum of its proper divisors (135477986).

234721534 is a wasteful number, since it uses less digits than its factorization.

234721534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66435.

The product of its digits is 20160, while the sum is 31.

The square root of 234721534 is about 15320.6244650797. The cubic root of 234721534 is about 616.8567360864.

Adding to 234721534 its reverse (435127432), we get a palindrome (669848966).

The spelling of 234721534 in words is "two hundred thirty-four million, seven hundred twenty-one thousand, five hundred thirty-four".