72313312103 has 2 divisors, whose sum is σ = 72313312104. Its totient is φ = 72313312102.

The previous prime is 72313312091. The next prime is 72313312139. The reversal of 72313312103 is 30121331327.

It is a weak prime.

It is an emirp because it is prime and its reverse (30121331327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72313312103 - 2¹⁸ = 72313049959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72313342103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36156656051 + 36156656052.

It is an arithmetic number, because the mean of its divisors is an integer number (36156656052).

Almost surely, 2^72313312103 is an apocalyptic number.

72313312103 is a deficient number, since it is larger than the sum of its proper divisors (1).

72313312103 is an equidigital number, since it uses as much as digits as its factorization.

72313312103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The spelling of 72313312103 in words is "seventy-two billion, three hundred thirteen million, three hundred twelve thousand, one hundred three".