111320057 has 2 divisors, whose sum is σ = 111320058. Its totient is φ = 111320056.

The previous prime is 111320051. The next prime is 111320081. The reversal of 111320057 is 750023111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105288121 + 6031936 = 10261^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 111320057 - 2⁸ = 111319801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111320051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660028 + 55660029.

It is an arithmetic number, because the mean of its divisors is an integer number (55660029).

Almost surely, 2^111320057 is an apocalyptic number.

It is an amenable number.

111320057 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320057 is an equidigital number, since it uses as much as digits as its factorization.

111320057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 111320057 is about 10550.8320524971. The cubic root of 111320057 is about 481.0510201858.

Adding to 111320057 its reverse (750023111), we get a palindrome (861343168).

The spelling of 111320057 in words is "one hundred eleven million, three hundred twenty thousand, fifty-seven".