20343541 has 8 divisors (see below), whose sum is σ = 20640384. Its totient is φ = 20049120.

The previous prime is 20343517. The next prime is 20343553. The reversal of 20343541 is 14534302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20343541 - 2¹⁹ = 19819253 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 (20343581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21876 + ... + 22786.

It is an arithmetic number, because the mean of its divisors is an integer number (2580048).

Almost surely, 2^20343541 is an apocalyptic number.

It is an amenable number.

20343541 is a deficient number, since it is larger than the sum of its proper divisors (296843).

20343541 is a wasteful number, since it uses less digits than its factorization.

20343541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20343541 is about 4510.3814694547. The cubic root of 20343541 is about 272.9871363920.

Adding to 20343541 its reverse (14534302), we get a palindrome (34877843).

The spelling of 20343541 in words is "twenty million, three hundred forty-three thousand, five hundred forty-one".