20343011 has 8 divisors (see below), whose sum is σ = 22442784. Its totient is φ = 18319680.

The previous prime is 20342981. The next prime is 20343019. The reversal of 20343011 is 11034302.

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 20343011 - 2¹⁰ = 20341987 is a prime.

It is a super-2 number, since 2×20343011² = 827676193092242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20343019) 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 7 ways as a sum of consecutive naturals, for example, 18551 + ... + 19616.

It is an arithmetic number, because the mean of its divisors is an integer number (2805348).

Almost surely, 2^20343011 is an apocalyptic number.

20343011 is a deficient number, since it is larger than the sum of its proper divisors (2099773).

20343011 is a wasteful number, since it uses less digits than its factorization.

20343011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38221.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20343011 is about 4510.3227157267. The cubic root of 20343011 is about 272.9847657061.

Adding to 20343011 its reverse (11034302), we get a palindrome (31377313).

It can be divided in two parts, 2034301 and 1, that added together give a palindrome (2034302).

The spelling of 20343011 in words is "twenty million, three hundred forty-three thousand, eleven".