231211112201311 has 64 divisors (see below), whose sum is σ = 266911678955520. Its totient is φ = 198344390307840.

The previous prime is 231211112201309. The next prime is 231211112201339. The reversal of 231211112201311 is 113102211112132.

231211112201311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 231211112201311 - 2¹ = 231211112201309 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 (231211112201371) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2433933031 + ... + 2434028023.

It is an arithmetic number, because the mean of its divisors is an integer number (4170494983680).

Almost surely, 2^{231211112201311} is an apocalyptic number.

231211112201311 is a deficient number, since it is larger than the sum of its proper divisors (35700566754209).

231211112201311 is a wasteful number, since it uses less digits than its factorization.

231211112201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96056.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 231211112201311 its reverse (113102211112132), we get a palindrome (344313323313443).

The spelling of 231211112201311 in words is "two hundred thirty-one trillion, two hundred eleven billion, one hundred twelve million, two hundred one thousand, three hundred eleven".