20012353 has 4 divisors (see below), whose sum is σ = 20052180. Its totient is φ = 19972528.

The previous prime is 20012347. The next prime is 20012371. The reversal of 20012353 is 35321002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16507969 + 3504384 = 4063^2 + 1872^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012353 - 2⁹ = 20011841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19150 + ... + 20167.

It is an arithmetic number, because the mean of its divisors is an integer number (5013045).

Almost surely, 2^20012353 is an apocalyptic number.

It is an amenable number.

20012353 is a deficient number, since it is larger than the sum of its proper divisors (39827).

20012353 is an equidigital number, since it uses as much as digits as its factorization.

20012353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39826.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20012353 is about 4473.5168491915. The cubic root of 20012353 is about 271.4976354923.

Adding to 20012353 its reverse (35321002), we get a palindrome (55333355).

The spelling of 20012353 in words is "twenty million, twelve thousand, three hundred fifty-three".