111719407 has 2 divisors, whose sum is σ = 111719408. Its totient is φ = 111719406.

The previous prime is 111719369. The next prime is 111719429. The reversal of 111719407 is 704917111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111719407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111719467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55859703 + 55859704.

It is an arithmetic number, because the mean of its divisors is an integer number (55859704).

Almost surely, 2^111719407 is an apocalyptic number.

111719407 is a deficient number, since it is larger than the sum of its proper divisors (1).

111719407 is an equidigital number, since it uses as much as digits as its factorization.

111719407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 31.

The square root of 111719407 is about 10569.7401576387. The cubic root of 111719407 is about 481.6255751048.

The spelling of 111719407 in words is "one hundred eleven million, seven hundred nineteen thousand, four hundred seven".