20341355 has 4 divisors (see below), whose sum is σ = 24409632. Its totient is φ = 16273080.

The previous prime is 20341351. The next prime is 20341393. The reversal of 20341355 is 55314302.

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

It is not a de Polignac number, because 20341355 - 2² = 20341351 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 20341355.

It is not an unprimeable number, because it can be changed into a prime (20341351) 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, 2034131 + ... + 2034140.

It is an arithmetic number, because the mean of its divisors is an integer number (6102408).

Almost surely, 2^20341355 is an apocalyptic number.

20341355 is a deficient number, since it is larger than the sum of its proper divisors (4068277).

20341355 is an equidigital number, since it uses as much as digits as its factorization.

20341355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068276.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20341355 is about 4510.1391331089. The cubic root of 20341355 is about 272.9773581655.

Adding to 20341355 its reverse (55314302), we get a palindrome (75655657).

The spelling of 20341355 in words is "twenty million, three hundred forty-one thousand, three hundred fifty-five".