231020112011 has 24 divisors (see below), whose sum is σ = 261659820240. Its totient is φ = 202519336320.

The previous prime is 231020111989. The next prime is 231020112013. The reversal of 231020112011 is 110211020132.

It is not a de Polignac number, because 231020112011 - 2⁶ = 231020111947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231020112013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1320476 + ... + 1485158.

It is an arithmetic number, because the mean of its divisors is an integer number (10902492510).

Almost surely, 2^231020112011 is an apocalyptic number.

231020112011 is a deficient number, since it is larger than the sum of its proper divisors (30639708229).

231020112011 is a wasteful number, since it uses less digits than its factorization.

231020112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164847 (or 164786 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 231020112011 its reverse (110211020132), we get a palindrome (341231132143).

The spelling of 231020112011 in words is "two hundred thirty-one billion, twenty million, one hundred twelve thousand, eleven".