231522111353211 has 16 divisors (see below), whose sum is σ = 352796044044288. Its totient is φ = 132298182172800.

The previous prime is 231522111353129. The next prime is 231522111353219. The reversal of 231522111353211 is 112353111225132.

231522111353211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231522111353211 - 2⁷ = 231522111353083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231522111353219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11144406 + ... + 24233076.

It is an arithmetic number, because the mean of its divisors is an integer number (22049752752768).

Almost surely, 2^{231522111353211} is an apocalyptic number.

231522111353211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231522111353211 is a deficient number, since it is larger than the sum of its proper divisors (121273932691077).

231522111353211 is a wasteful number, since it uses less digits than its factorization.

231522111353211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13931002.

The product of its digits is 10800, while the sum is 33.

Adding to 231522111353211 its reverse (112353111225132), we get a palindrome (343875222578343).

The spelling of 231522111353211 in words is "two hundred thirty-one trillion, five hundred twenty-two billion, one hundred eleven million, three hundred fifty-three thousand, two hundred eleven".