320111101 has 2 divisors, whose sum is σ = 320111102. Its totient is φ = 320111100.

The previous prime is 320111089. The next prime is 320111123. The reversal of 320111101 is 101111023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248031001 + 72080100 = 15749^2 + 8490^2 .

It is a cyclic number.

It is not a de Polignac number, because 320111101 - 2²⁷ = 185893373 is a prime.

It is a super-2 number, since 2×320111101² = 204942233966864402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320112101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160055550 + 160055551.

It is an arithmetic number, because the mean of its divisors is an integer number (160055551).

Almost surely, 2^320111101 is an apocalyptic number.

It is an amenable number.

320111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

320111101 is an equidigital number, since it uses as much as digits as its factorization.

320111101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 320111101 is about 17891.6489178611. The cubic root of 320111101 is about 684.0695278605.

Adding to 320111101 its reverse (101111023), we get a palindrome (421222124).

The spelling of 320111101 in words is "three hundred twenty million, one hundred eleven thousand, one hundred one".