20201101231 has 8 divisors (see below), whose sum is σ = 20279001600. Its totient is φ = 20123350680.

The previous prime is 20201101229. The next prime is 20201101247. The reversal of 20201101231 is 13210110202.

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 20201101231 - 2¹ = 20201101229 is a prime.

It is a super-2 number, since 2×20201101231² (a number of 21 digits) 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 (20201501231) 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, 236580 + ... + 310438.

It is an arithmetic number, because the mean of its divisors is an integer number (2534875200).

Almost surely, 2^20201101231 is an apocalyptic number.

20201101231 is a deficient number, since it is larger than the sum of its proper divisors (77900369).

20201101231 is an equidigital number, since it uses as much as digits as its factorization.

20201101231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74909.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20201101231 its reverse (13210110202), we get a palindrome (33411211433).

The spelling of 20201101231 in words is "twenty billion, two hundred one million, one hundred one thousand, two hundred thirty-one".