20359343 has 4 divisors (see below), whose sum is σ = 21016128. Its totient is φ = 19702560.

The previous prime is 20359337. The next prime is 20359441. The reversal of 20359343 is 34395302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20359343 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 (20359333) 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, 328346 + ... + 328407.

It is an arithmetic number, because the mean of its divisors is an integer number (5254032).

Almost surely, 2^20359343 is an apocalyptic number.

20359343 is a deficient number, since it is larger than the sum of its proper divisors (656785).

20359343 is an equidigital number, since it uses as much as digits as its factorization.

20359343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656784.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 20359343 is about 4512.1328659515. The cubic root of 20359343 is about 273.0577997097.

It can be divided in two parts, 20359 and 343, that added together give a palindrome (20702).

The spelling of 20359343 in words is "twenty million, three hundred fifty-nine thousand, three hundred forty-three".