20343193 has 4 divisors (see below), whose sum is σ = 21908068. Its totient is φ = 18778320.

The previous prime is 20343187. The next prime is 20343199. The reversal of 20343193 is 39134302.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (20343187) and next prime (20343199).

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 19474569 = 932^2 + 4413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343193 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (20343199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782418 + ... + 782443.

It is an arithmetic number, because the mean of its divisors is an integer number (5477017).

Almost surely, 2^20343193 is an apocalyptic number.

It is an amenable number.

20343193 is a deficient number, since it is larger than the sum of its proper divisors (1564875).

20343193 is a wasteful number, since it uses less digits than its factorization.

20343193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564874.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20343193 is about 4510.3428916214. The cubic root of 20343193 is about 272.9855797953.

Adding to 20343193 its reverse (39134302), we get a palindrome (59477495).

The spelling of 20343193 in words is "twenty million, three hundred forty-three thousand, one hundred ninety-three".