20234523 has 16 divisors (see below), whose sum is σ = 27838496. Its totient is φ = 13063680.

The previous prime is 20234521. The next prime is 20234551. The reversal of 20234523 is 32543202.

It is not a de Polignac number, because 20234523 - 2¹ = 20234521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20234523.

It is not an unprimeable number, because it can be changed into a prime (20234521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46515 + ... + 46947.

It is an arithmetic number, because the mean of its divisors is an integer number (1739906).

Almost surely, 2^20234523 is an apocalyptic number.

20234523 is a deficient number, since it is larger than the sum of its proper divisors (7603973).

20234523 is a wasteful number, since it uses less digits than its factorization.

20234523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20234523 is about 4498.2800046240. The cubic root of 20234523 is about 272.4986302992.

Adding to 20234523 its reverse (32543202), we get a palindrome (52777725).

The spelling of 20234523 in words is "twenty million, two hundred thirty-four thousand, five hundred twenty-three".