231232134031211 has 4 divisors (see below), whose sum is σ = 238691235129024. Its totient is φ = 223773032933400.

The previous prime is 231232134031111. The next prime is 231232134031247. The reversal of 231232134031211 is 112130431232132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231232134031211 - 2³⁰ = 231231060289387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231232134031111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3729550548860 + ... + 3729550548921.

It is an arithmetic number, because the mean of its divisors is an integer number (59672808782256).

Almost surely, 2^{231232134031211} is an apocalyptic number.

231232134031211 is a deficient number, since it is larger than the sum of its proper divisors (7459101097813).

231232134031211 is an equidigital number, since it uses as much as digits as its factorization.

231232134031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7459101097812.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 231232134031211 its reverse (112130431232132), we get a palindrome (343362565263343).

The spelling of 231232134031211 in words is "two hundred thirty-one trillion, two hundred thirty-two billion, one hundred thirty-four million, thirty-one thousand, two hundred eleven".