20307141 has 6 divisors (see below), whose sum is σ = 29332550. Its totient is φ = 13538088.

The previous prime is 20307121. The next prime is 20307179. The reversal of 20307141 is 14170302.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 540225 = 4446^2 + 735^2 .

It is not a de Polignac number, because 20307141 - 2¹⁷ = 20176069 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 (20307121) 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, 1128166 + ... + 1128183.

Almost surely, 2^20307141 is an apocalyptic number.

It is an amenable number.

20307141 is a deficient number, since it is larger than the sum of its proper divisors (9025409).

20307141 is a wasteful number, since it uses less digits than its factorization.

20307141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256355 (or 2256352 counting only the distinct ones).

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

The square root of 20307141 is about 4506.3445274413. The cubic root of 20307141 is about 272.8242236826.

Adding to 20307141 its reverse (14170302), we get a palindrome (34477443).

The spelling of 20307141 in words is "twenty million, three hundred seven thousand, one hundred forty-one".