20347101 has 6 divisors (see below), whose sum is σ = 29390270. Its totient is φ = 13564728.

The previous prime is 20347073. The next prime is 20347121. The reversal of 20347101 is 10174302.

It can be written as a sum of positive squares in only one way, i.e., 17214201 + 3132900 = 4149^2 + 1770^2 .

It is not a de Polignac number, because 20347101 - 2⁵ = 20347069 is a prime.

It is a Duffinian number.

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 (20347121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1130386 + ... + 1130403.

Almost surely, 2^20347101 is an apocalyptic number.

It is an amenable number.

20347101 is a deficient number, since it is larger than the sum of its proper divisors (9043169).

20347101 is a wasteful number, since it uses less digits than its factorization.

20347101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260795 (or 2260792 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20347101 is about 4510.7760973030. The cubic root of 20347101 is about 273.0030591776.

The spelling of 20347101 in words is "twenty million, three hundred forty-seven thousand, one hundred one".