20316061 has 4 divisors (see below), whose sum is σ = 21199392. Its totient is φ = 19432732.

The previous prime is 20316041. The next prime is 20316077. The reversal of 20316061 is 16061302.

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.

It is a cyclic number.

It is not a de Polignac number, because 20316061 - 2⁹ = 20315549 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 (20316041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441631 + ... + 441676.

It is an arithmetic number, because the mean of its divisors is an integer number (5299848).

Almost surely, 2^20316061 is an apocalyptic number.

It is an amenable number.

20316061 is a deficient number, since it is larger than the sum of its proper divisors (883331).

20316061 is an equidigital number, since it uses as much as digits as its factorization.

20316061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883330.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20316061 is about 4507.3341344968. The cubic root of 20316061 is about 272.8641642441.

Adding to 20316061 its reverse (16061302), we get a palindrome (36377363).

The spelling of 20316061 in words is "twenty million, three hundred sixteen thousand, sixty-one".