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111109997 is a prime number
BaseRepresentation
bin1101001111101…
…10011101101101
321202001222021002
412213312131231
5211421004442
615005250045
72516263565
oct647663555
9252058232
10111109997
115779a649
1231263925
131a03367b
1410a83da5
159b4b732
hex69f676d

111109997 has 2 divisors, whose sum is σ = 111109998. Its totient is φ = 111109996.

The previous prime is 111109981. The next prime is 111110029. The reversal of 111109997 is 799901111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98922916 + 12187081 = 9946^2 + 3491^2 .

It is a cyclic number.

It is not a de Polignac number, because 111109997 - 24 = 111109981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111109997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111109937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55554998 + 55554999.

It is an arithmetic number, because the mean of its divisors is an integer number (55554999).

Almost surely, 2111109997 is an apocalyptic number.

It is an amenable number.

111109997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111109997 is an equidigital number, since it uses as much as digits as its factorization.

111109997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 38.

The square root of 111109997 is about 10540.8726868320. The cubic root of 111109997 is about 480.7482499375.

The spelling of 111109997 in words is "one hundred eleven million, one hundred nine thousand, nine hundred ninety-seven".