20351135 has 16 divisors (see below), whose sum is σ = 27987456. Its totient is φ = 13916448.

The previous prime is 20351131. The next prime is 20351143. The reversal of 20351135 is 53115302.

It is not a de Polignac number, because 20351135 - 2² = 20351131 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20351131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18614 + ... + 19676.

It is an arithmetic number, because the mean of its divisors is an integer number (1749216).

Almost surely, 2^20351135 is an apocalyptic number.

20351135 is a deficient number, since it is larger than the sum of its proper divisors (7636321).

20351135 is a wasteful number, since it uses less digits than its factorization.

20351135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 20351135 is about 4511.2232265761. The cubic root of 20351135 is about 273.0210997749.

Adding to 20351135 its reverse (53115302), we get a palindrome (73466437).

The spelling of 20351135 in words is "twenty million, three hundred fifty-one thousand, one hundred thirty-five".