331123201231111 has 2 divisors, whose sum is σ = 331123201231112. Its totient is φ = 331123201231110.

The previous prime is 331123201231091. The next prime is 331123201231117. The reversal of 331123201231111 is 111132102321133.

It is a strong prime.

It is an emirp because it is prime and its reverse (111132102321133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331123201231111 - 2¹¹ = 331123201229063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331123201231117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165561600615555 + 165561600615556.

It is an arithmetic number, because the mean of its divisors is an integer number (165561600615556).

Almost surely, 2^{331123201231111} is an apocalyptic number.

331123201231111 is a deficient number, since it is larger than the sum of its proper divisors (1).

331123201231111 is an equidigital number, since it uses as much as digits as its factorization.

331123201231111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 331123201231111 its reverse (111132102321133), we get a palindrome (442255303552244).

The spelling of 331123201231111 in words is "three hundred thirty-one trillion, one hundred twenty-three billion, two hundred one million, two hundred thirty-one thousand, one hundred eleven".