391226481103 has 2 divisors, whose sum is σ = 391226481104. Its totient is φ = 391226481102.

The previous prime is 391226481091. The next prime is 391226481119. The reversal of 391226481103 is 301184622193.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 391226481103 - 2²⁵ = 391192926671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (391226481133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195613240551 + 195613240552.

It is an arithmetic number, because the mean of its divisors is an integer number (195613240552).

Almost surely, 2^391226481103 is an apocalyptic number.

391226481103 is a deficient number, since it is larger than the sum of its proper divisors (1).

391226481103 is an equidigital number, since it uses as much as digits as its factorization.

391226481103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 391226481103 in words is "three hundred ninety-one billion, two hundred twenty-six million, four hundred eighty-one thousand, one hundred three".