20313135105 has 16 divisors (see below), whose sum is σ = 32515560000. Its totient is φ = 10828824128.

The previous prime is 20313135053. The next prime is 20313135119. The reversal of 20313135105 is 50153131302.

It is a cyclic number.

It is not a de Polignac number, because 20313135105 - 2²² = 20308940801 is a prime.

It is a super-2 number, since 2×20313135105² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268230 + ... + 335519.

It is an arithmetic number, because the mean of its divisors is an integer number (2032222500).

Almost surely, 2^20313135105 is an apocalyptic number.

It is an amenable number.

20313135105 is a deficient number, since it is larger than the sum of its proper divisors (12202424895).

20313135105 is a wasteful number, since it uses less digits than its factorization.

20313135105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606000.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 20313135105 its reverse (50153131302), we get a palindrome (70466266407).

The spelling of 20313135105 in words is "twenty billion, three hundred thirteen million, one hundred thirty-five thousand, one hundred five".