20313135 has 24 divisors (see below), whose sum is σ = 35315280. Its totient is φ = 10801152.

The previous prime is 20313133. The next prime is 20313143. The reversal of 20313135 is 53131302.

It is not a de Polignac number, because 20313135 - 2¹ = 20313133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26031 + ... + 26799.

It is an arithmetic number, because the mean of its divisors is an integer number (1471470).

Almost surely, 2^20313135 is an apocalyptic number.

20313135 is a deficient number, since it is larger than the sum of its proper divisors (15002145).

20313135 is a wasteful number, since it uses less digits than its factorization.

20313135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 20313135 is about 4507.0095407043. The cubic root of 20313135 is about 272.8510639540.

Adding to 20313135 its reverse (53131302), we get a palindrome (73444437).

The spelling of 20313135 in words is "twenty million, three hundred thirteen thousand, one hundred thirty-five".