20531067 has 4 divisors (see below), whose sum is σ = 27374760. Its totient is φ = 13687376.

The previous prime is 20531059. The next prime is 20531089. The reversal of 20531067 is 76013502.

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

It is a cyclic number.

It is not a de Polignac number, because 20531067 - 2³ = 20531059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20531867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3421842 + ... + 3421847.

It is an arithmetic number, because the mean of its divisors is an integer number (6843690).

Almost surely, 2^20531067 is an apocalyptic number.

20531067 is a deficient number, since it is larger than the sum of its proper divisors (6843693).

20531067 is an equidigital number, since it uses as much as digits as its factorization.

20531067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843692.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 20531067 is about 4531.1220464693. The cubic root of 20531067 is about 273.8233672538.

Adding to 20531067 its reverse (76013502), we get a palindrome (96544569).

The spelling of 20531067 in words is "twenty million, five hundred thirty-one thousand, sixty-seven".