108191305031 has 2 divisors, whose sum is σ = 108191305032. Its totient is φ = 108191305030.

The previous prime is 108191305003. The next prime is 108191305051. The reversal of 108191305031 is 130503191801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108191305031 - 2²² = 108187110727 is a prime.

It is a super-2 number, since 2×108191305031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108191305051) 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 as a sum of consecutive naturals, namely, 54095652515 + 54095652516.

It is an arithmetic number, because the mean of its divisors is an integer number (54095652516).

Almost surely, 2^108191305031 is an apocalyptic number.

108191305031 is a deficient number, since it is larger than the sum of its proper divisors (1).

108191305031 is an equidigital number, since it uses as much as digits as its factorization.

108191305031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

Adding to 108191305031 its reverse (130503191801), we get a palindrome (238694496832).

The spelling of 108191305031 in words is "one hundred eight billion, one hundred ninety-one million, three hundred five thousand, thirty-one".