231201022313011 has 4 divisors (see below), whose sum is σ = 231212152214992. Its totient is φ = 231189892411032.

The previous prime is 231201022312999. The next prime is 231201022313021. The reversal of 231201022313011 is 110313220102132.

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 231201022313011 - 2¹⁵ = 231201022280243 is a prime.

It is a super-2 number, since 2×231201022313011² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231201022313021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5564919831 + ... + 5564961376.

It is an arithmetic number, because the mean of its divisors is an integer number (57803038053748).

Almost surely, 2^{231201022313011} is an apocalyptic number.

231201022313011 is a deficient number, since it is larger than the sum of its proper divisors (11129901981).

231201022313011 is a wasteful number, since it uses less digits than its factorization.

231201022313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11129901980.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 231201022313011 its reverse (110313220102132), we get a palindrome (341514242415143).

The spelling of 231201022313011 in words is "two hundred thirty-one trillion, two hundred one billion, twenty-two million, three hundred thirteen thousand, eleven".