20315343 has 8 divisors (see below), whose sum is σ = 27116208. Its totient is φ = 13529024.

The previous prime is 20315303. The next prime is 20315359. The reversal of 20315343 is 34351302.

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 20315343 - 2¹⁰ = 20314319 is a prime.

It is a super-2 number, since 2×20315343² = 825426322415298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (3389526).

Almost surely, 2^20315343 is an apocalyptic number.

20315343 is a deficient number, since it is larger than the sum of its proper divisors (6800865).

20315343 is a wasteful number, since it uses less digits than its factorization.

20315343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7273.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20315343 is about 4507.2544858262. The cubic root of 20315343 is about 272.8609497303.

Adding to 20315343 its reverse (34351302), we get a palindrome (54666645).

The spelling of 20315343 in words is "twenty million, three hundred fifteen thousand, three hundred forty-three".