231201020211 has 8 divisors (see below), whose sum is σ = 352306316544. Its totient is φ = 132114868680.

The previous prime is 231201020207. The next prime is 231201020213. The reversal of 231201020211 is 112020102132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231201020211 - 2² = 231201020207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231201020213) 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, 5504786175 + ... + 5504786216.

It is an arithmetic number, because the mean of its divisors is an integer number (44038289568).

Almost surely, 2^231201020211 is an apocalyptic number.

231201020211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231201020211 is a deficient number, since it is larger than the sum of its proper divisors (121105296333).

231201020211 is a wasteful number, since it uses less digits than its factorization.

231201020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009572401.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 231201020211 its reverse (112020102132), we get a palindrome (343221122343).

The spelling of 231201020211 in words is "two hundred thirty-one billion, two hundred one million, twenty thousand, two hundred eleven".