20731027 has 8 divisors (see below), whose sum is σ = 22379040. Its totient is φ = 19145280.

The previous prime is 20731001. The next prime is 20731043. The reversal of 20731027 is 72013702.

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 20731027 - 2¹⁵ = 20698259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20730989 and 20731007.

It is not an unprimeable number, because it can be changed into a prime (20731057) 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, 14874 + ... + 16207.

It is an arithmetic number, because the mean of its divisors is an integer number (2797380).

Almost surely, 2^20731027 is an apocalyptic number.

20731027 is a deficient number, since it is larger than the sum of its proper divisors (1648013).

20731027 is a wasteful number, since it uses less digits than its factorization.

20731027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31133.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 20731027 is about 4553.1337559971. The cubic root of 20731027 is about 274.7094540189.

Adding to 20731027 its reverse (72013702), we get a palindrome (92744729).

The spelling of 20731027 in words is "twenty million, seven hundred thirty-one thousand, twenty-seven".