231312032211 has 8 divisors (see below), whose sum is σ = 332140354000. Its totient is φ = 142345865952.

The previous prime is 231312032207. The next prime is 231312032233. The reversal of 231312032211 is 112230213132.

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

It is not a de Polignac number, because 231312032211 - 2² = 231312032207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231312030211) 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, 2965538836 + ... + 2965538913.

It is an arithmetic number, because the mean of its divisors is an integer number (41517544250).

Almost surely, 2^231312032211 is an apocalyptic number.

231312032211 is a deficient number, since it is larger than the sum of its proper divisors (100828321789).

231312032211 is a wasteful number, since it uses less digits than its factorization.

231312032211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931077765.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231312032211 its reverse (112230213132), we get a palindrome (343542245343).

The spelling of 231312032211 in words is "two hundred thirty-one billion, three hundred twelve million, thirty-two thousand, two hundred eleven".