201111442331 has 4 divisors (see below), whose sum is σ = 212941527192. Its totient is φ = 189281357472.

The previous prime is 201111442291. The next prime is 201111442381. The reversal of 201111442331 is 133244111102.

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 201111442331 - 2¹⁴ = 201111425947 is a prime.

It is a super-2 number, since 2×201111442331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201111442297 and 201111442306.

It is not an unprimeable number, because it can be changed into a prime (201111442381) 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, 5915042405 + ... + 5915042438.

It is an arithmetic number, because the mean of its divisors is an integer number (53235381798).

Almost surely, 2^201111442331 is an apocalyptic number.

201111442331 is a deficient number, since it is larger than the sum of its proper divisors (11830084861).

201111442331 is a wasteful number, since it uses less digits than its factorization.

201111442331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11830084860.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 201111442331 its reverse (133244111102), we get a palindrome (334355553433).

The spelling of 201111442331 in words is "two hundred one billion, one hundred eleven million, four hundred forty-two thousand, three hundred thirty-one".