161213331113323 has 2 divisors, whose sum is σ = 161213331113324. Its totient is φ = 161213331113322.

The previous prime is 161213331113309. The next prime is 161213331113363. The reversal of 161213331113323 is 323311133312161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161213331113323 is a prime.

It is not a weakly prime, because it can be changed into another prime (161213331113363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80606665556661 + 80606665556662.

It is an arithmetic number, because the mean of its divisors is an integer number (80606665556662).

Almost surely, 2^{161213331113323} is an apocalyptic number.

161213331113323 is a deficient number, since it is larger than the sum of its proper divisors (1).

161213331113323 is an equidigital number, since it uses as much as digits as its factorization.

161213331113323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 34.

Adding to 161213331113323 its reverse (323311133312161), we get a palindrome (484524464425484).

The spelling of 161213331113323 in words is "one hundred sixty-one trillion, two hundred thirteen billion, three hundred thirty-one million, one hundred thirteen thousand, three hundred twenty-three".