20066231 has 8 divisors (see below), whose sum is σ = 20812800. Its totient is φ = 19323360.

The previous prime is 20066197. The next prime is 20066243. The reversal of 20066231 is 13266002.

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 20066231 - 2¹⁰ = 20065207 is a prime.

It is a super-2 number, since 2×20066231² = 805307253090722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066131) 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, 15050 + ... + 16328.

It is an arithmetic number, because the mean of its divisors is an integer number (2601600).

Almost surely, 2^20066231 is an apocalyptic number.

20066231 is a deficient number, since it is larger than the sum of its proper divisors (746569).

20066231 is a wasteful number, since it uses less digits than its factorization.

20066231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20066231 is about 4479.5346856565. The cubic root of 20066231 is about 271.7410625076.

The spelling of 20066231 in words is "twenty million, sixty-six thousand, two hundred thirty-one".