211231131331 has 8 divisors (see below), whose sum is σ = 233350848000. Its totient is φ = 189597562440.

The previous prime is 211231131211. The next prime is 211231131337. The reversal of 211231131331 is 133131132112.

211231131331 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 not a de Polignac number, because 211231131331 - 2¹⁹ = 211230607043 is a prime.

It is a super-2 number, since 2×211231131331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211231131337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121536031 + ... + 121537768.

It is an arithmetic number, because the mean of its divisors is an integer number (29168856000).

Almost surely, 2^211231131331 is an apocalyptic number.

211231131331 is a deficient number, since it is larger than the sum of its proper divisors (22119716669).

211231131331 is a wasteful number, since it uses less digits than its factorization.

211231131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243073889.

The product of its digits is 324, while the sum is 22.

Adding to 211231131331 its reverse (133131132112), we get a palindrome (344362263443).

The spelling of 211231131331 in words is "two hundred eleven billion, two hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-one".