231201021111311 has 8 divisors (see below), whose sum is σ = 232428686644224. Its totient is φ = 229973534630680.

The previous prime is 231201021111233. The next prime is 231201021111323. The reversal of 231201021111311 is 113111120102132.

231201021111311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231201021111311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201021111811) 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, 42173321 + ... + 47339106.

It is an arithmetic number, because the mean of its divisors is an integer number (29053585830528).

Almost surely, 2^{231201021111311} is an apocalyptic number.

231201021111311 is a deficient number, since it is larger than the sum of its proper divisors (1227665532913).

231201021111311 is a wasteful number, since it uses less digits than its factorization.

231201021111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89526141.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 231201021111311 its reverse (113111120102132), we get a palindrome (344312141213443).

The spelling of 231201021111311 in words is "two hundred thirty-one trillion, two hundred one billion, twenty-one million, one hundred eleven thousand, three hundred eleven".