111331043212031 has 2 divisors, whose sum is σ = 111331043212032. Its totient is φ = 111331043212030.

The previous prime is 111331043211907. The next prime is 111331043212049. The reversal of 111331043212031 is 130212340133111.

It is a strong prime.

It is an emirp because it is prime and its reverse (130212340133111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111331043212031 - 2²⁶ = 111330976103167 is a prime.

It is a super-2 number, since 2×111331043212031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111331043212091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55665521606015 + 55665521606016.

It is an arithmetic number, because the mean of its divisors is an integer number (55665521606016).

Almost surely, 2^{111331043212031} is an apocalyptic number.

111331043212031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111331043212031 is an equidigital number, since it uses as much as digits as its factorization.

111331043212031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 111331043212031 its reverse (130212340133111), we get a palindrome (241543383345142).

The spelling of 111331043212031 in words is "one hundred eleven trillion, three hundred thirty-one billion, forty-three million, two hundred twelve thousand, thirty-one".