20323135 has 16 divisors (see below), whose sum is σ = 28772352. Its totient is φ = 13485600.

The previous prime is 20323091. The next prime is 20323139. The reversal of 20323135 is 53132302.

It is not a de Polignac number, because 20323135 - 2⁹ = 20322623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8281 + ... + 10450.

It is an arithmetic number, because the mean of its divisors is an integer number (1798272).

Almost surely, 2^20323135 is an apocalyptic number.

20323135 is a deficient number, since it is larger than the sum of its proper divisors (8449217).

20323135 is a wasteful number, since it uses less digits than its factorization.

20323135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18774.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20323135 is about 4508.1187872548. The cubic root of 20323135 is about 272.8958307682.

Adding to 20323135 its reverse (53132302), we get a palindrome (73455437).

The spelling of 20323135 in words is "twenty million, three hundred twenty-three thousand, one hundred thirty-five".