20343133 has 8 divisors (see below), whose sum is σ = 20756736. Its totient is φ = 19933200.

The previous prime is 20343097. The next prime is 20343137. The reversal of 20343133 is 33134302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20343133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20343133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343137) 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, 12060 + ... + 13642.

It is an arithmetic number, because the mean of its divisors is an integer number (2594592).

Almost surely, 2^20343133 is an apocalyptic number.

It is an amenable number.

20343133 is a deficient number, since it is larger than the sum of its proper divisors (413603).

20343133 is a wasteful number, since it uses less digits than its factorization.

20343133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 20343133 is about 4510.3362402375. The cubic root of 20343133 is about 272.9853114148.

Adding to 20343133 its reverse (33134302), we get a palindrome (53477435).

The spelling of 20343133 in words is "twenty million, three hundred forty-three thousand, one hundred thirty-three".