111649423 has 2 divisors, whose sum is σ = 111649424. Its totient is φ = 111649422.

The previous prime is 111649411. The next prime is 111649441. The reversal of 111649423 is 324946111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111649423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111649493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55824711 + 55824712.

It is an arithmetic number, because the mean of its divisors is an integer number (55824712).

Almost surely, 2^111649423 is an apocalyptic number.

111649423 is a deficient number, since it is larger than the sum of its proper divisors (1).

111649423 is an equidigital number, since it uses as much as digits as its factorization.

111649423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 111649423 is about 10566.4290562138. The cubic root of 111649423 is about 481.5249864195.

The spelling of 111649423 in words is "one hundred eleven million, six hundred forty-nine thousand, four hundred twenty-three".