331243225111 has 4 divisors (see below), whose sum is σ = 336187153912. Its totient is φ = 326299296312.

The previous prime is 331243225087. The next prime is 331243225129. The reversal of 331243225111 is 111522342133.

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 331243225111 - 2¹⁹ = 331242700823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331243225111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331243225711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471964300 + ... + 2471964433.

It is an arithmetic number, because the mean of its divisors is an integer number (84046788478).

Almost surely, 2^331243225111 is an apocalyptic number.

331243225111 is a deficient number, since it is larger than the sum of its proper divisors (4943928801).

331243225111 is an equidigital number, since it uses as much as digits as its factorization.

331243225111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943928800.

The product of its digits is 4320, while the sum is 28.

Adding to 331243225111 its reverse (111522342133), we get a palindrome (442765567244).

The spelling of 331243225111 in words is "three hundred thirty-one billion, two hundred forty-three million, two hundred twenty-five thousand, one hundred eleven".