161304223103 has 2 divisors, whose sum is σ = 161304223104. Its totient is φ = 161304223102.

The previous prime is 161304223037. The next prime is 161304223127. The reversal of 161304223103 is 301322403161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161304223103 - 2³² = 157009255807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161304223133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80652111551 + 80652111552.

It is an arithmetic number, because the mean of its divisors is an integer number (80652111552).

Almost surely, 2^161304223103 is an apocalyptic number.

161304223103 is a deficient number, since it is larger than the sum of its proper divisors (1).

161304223103 is an equidigital number, since it uses as much as digits as its factorization.

161304223103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 161304223103 its reverse (301322403161), we get a palindrome (462626626264).

The spelling of 161304223103 in words is "one hundred sixty-one billion, three hundred four million, two hundred twenty-three thousand, one hundred three".