111212313112031 has 2 divisors, whose sum is σ = 111212313112032. Its totient is φ = 111212313112030.

The previous prime is 111212313112007. The next prime is 111212313112091. The reversal of 111212313112031 is 130211313212111.

It is a weak prime.

It is an emirp because it is prime and its reverse (130211313212111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111212313112031 - 2³⁰ = 111211239370207 is a prime.

It is a super-2 number, since 2×111212313112031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212313111988 and 111212313112006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111212313112091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606156556015 + 55606156556016.

It is an arithmetic number, because the mean of its divisors is an integer number (55606156556016).

Almost surely, 2^{111212313112031} is an apocalyptic number.

111212313112031 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212313112031 is an equidigital number, since it uses as much as digits as its factorization.

111212313112031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 111212313112031 its reverse (130211313212111), we get a palindrome (241423626324142).

The spelling of 111212313112031 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred thirteen million, one hundred twelve thousand, thirty-one".