111923897 has 2 divisors, whose sum is σ = 111923898. Its totient is φ = 111923896.

The previous prime is 111923881. The next prime is 111923921. The reversal of 111923897 is 798329111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105288121 + 6635776 = 10261^2 + 2576^2 .

It is a cyclic number.

It is not a de Polignac number, because 111923897 - 2⁴ = 111923881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111923827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55961948 + 55961949.

It is an arithmetic number, because the mean of its divisors is an integer number (55961949).

Almost surely, 2^111923897 is an apocalyptic number.

It is an amenable number.

111923897 is a deficient number, since it is larger than the sum of its proper divisors (1).

111923897 is an equidigital number, since it uses as much as digits as its factorization.

111923897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 41.

The square root of 111923897 is about 10579.4091044822. The cubic root of 111923897 is about 481.9192500873.

The spelling of 111923897 in words is "one hundred eleven million, nine hundred twenty-three thousand, eight hundred ninety-seven".