20104331 has 8 divisors (see below), whose sum is σ = 22060080. Its totient is φ = 18207072.

The previous prime is 20104313. The next prime is 20104333. The reversal of 20104331 is 13340102.

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

It is a de Polignac number, because none of the positive numbers 2^k-20104331 is a prime.

It is a super-2 number, since 2×20104331² = 808368249915122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20104333) 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 7 ways as a sum of consecutive naturals, for example, 13901 + ... + 15278.

It is an arithmetic number, because the mean of its divisors is an integer number (2757510).

Almost surely, 2^20104331 is an apocalyptic number.

20104331 is a deficient number, since it is larger than the sum of its proper divisors (1955749).

20104331 is a wasteful number, since it uses less digits than its factorization.

20104331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29245.

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

The square root of 20104331 is about 4483.7853427656. The cubic root of 20104331 is about 271.9129398059.

Adding to 20104331 its reverse (13340102), we get a palindrome (33444433).

The spelling of 20104331 in words is "twenty million, one hundred four thousand, three hundred thirty-one".