20272331 has 8 divisors (see below), whose sum is σ = 20588400. Its totient is φ = 19958400.

The previous prime is 20272309. The next prime is 20272339. The reversal of 20272331 is 13327202.

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 20272331 - 2⁶ = 20272267 is a prime.

It is a super-2 number, since 2×20272331² = 821934808347122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20272339) 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, 33431 + ... + 34031.

It is an arithmetic number, because the mean of its divisors is an integer number (2573550).

Almost surely, 2^20272331 is an apocalyptic number.

20272331 is a deficient number, since it is larger than the sum of its proper divisors (316069).

20272331 is an equidigital number, since it uses as much as digits as its factorization.

20272331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20272331 is about 4502.4805385476. The cubic root of 20272331 is about 272.6682450064.

Adding to 20272331 its reverse (13327202), we get a palindrome (33599533).

The spelling of 20272331 in words is "twenty million, two hundred seventy-two thousand, three hundred thirty-one".