20313101 has 4 divisors (see below), whose sum is σ = 20325312. Its totient is φ = 20300892.

The previous prime is 20313089. The next prime is 20313119. The reversal of 20313101 is 10131302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10131302 = 2 ⋅5065651.

It is a cyclic number.

It is not a de Polignac number, because 20313101 - 2¹⁰ = 20312077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313121) 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 3 ways as a sum of consecutive naturals, for example, 3125 + ... + 7098.

It is an arithmetic number, because the mean of its divisors is an integer number (5081328).

Almost surely, 2^20313101 is an apocalyptic number.

It is an amenable number.

20313101 is a deficient number, since it is larger than the sum of its proper divisors (12211).

20313101 is a wasteful number, since it uses less digits than its factorization.

20313101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12210.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 20313101 is about 4507.0057688004. The cubic root of 20313101 is about 272.8509117218.

Adding to 20313101 its reverse (10131302), we get a palindrome (30444403).

The spelling of 20313101 in words is "twenty million, three hundred thirteen thousand, one hundred one".